The Game Starts in DIAGON ALLEY

Quest - Buy your wand at Ollivander's.
You can go exploring now, but I would not recommend it as you don't have any
money yet. Simply move straight up and into the shop that Hagrid just entered.
(Directly above you). After testing a few the right one is found and given to
you. It comes equipped with the spells Flippendo Uno and Vermilious Uno. Exit
the shop. A man will now give you a Folio Magi a Folio Triplicus, four Famous
Witches and Wizards Cards and two Card Combinations.

Quest - Find Hagrid in Gringotts' lobby.
Gringotts' is the large white building with two pillars beside the door on the
right hand side of the wand shop. You can immediately enter, but first I would
take the time to gain some experience points and extra cash. Go into the
alleyway between the wand shop and Gringotts' and you will see some shiny blue
blobs. These are enemies. To battle, walk into one. The enemies here are rats,
each one will take two Flippendo Uno spells to kill
(one if you get a critical hit, or more if you miss) or one Vermilious Uno
spell (or more if you miss). I would recommend staying here until you have
leveled up Vermilious Uno to Vermilious Duo, and Flippendo Uno to Flippendo
Duo. You will be very grateful for the more powerful spells, the money and
experience you receive later on. Each rat will give you 2 EXP (experience
points) and a few sickles (money). You may also find items like pumpkin
pasties, and pepper-up potion. Again these are very useful later Do not worry
about being killed. As far as I have worked out there is no way you can die. If
your HP (health points) get to zero, the game will resume in the medical shop
which is below and to the left of the wand shop (talk to the lady behind the
counter to get healed for free. If you run out of MP (magic points) and haven't
leveled it up yet, simply use Flippendo Uno until you HP reaches zero. This
will save time.
*NOTE - You level spells up by using them a certain number of
times. Now you are leveled up, enter Gringotts'. Walk up to the top and talk
to Hagrid. You will then enter the dungeon beneath Gringotts'.

Quest - Find Hagrid in the Vault.
At this point, you can go exploring and find many useful items and cards by
searching the pictures and holes on the walls. The fastest way to your vault is
taking every "Up" route at the junctions and following the path round. (Just
keep going up at every opportunity) You will know when you are near your vault,
as there will be a huge shiny blue blob blocking the pathway. This is a boss
enemy. Concentrate your most powerful spell - Vermilious Duo (or Uno) if you didn't level it up - on the big
purple rat in the middle. The small rats are just normal enemies. If you did
level up, then you shouldn't have a problem here. If you keep dying, spend a
little longer fighting the easy enemies.
Once you have beaten the boss, follow the pathway round and you will meet
Hagrid and the bank manager who are waiting outside your vault. Hagrid will
tell you off for dawdling and then you will enter. Hagrid will only let you
take out 850 sickles and gives you a list of things you need to buy for school.
With all the money you have won from battles you should have over 1000 sickles now. Exit the
dungeons the same way you came in (go down at every opportunity). Exit
Gringotts'.

Quest - Buy school supplies in Diagon Alley.
Explore all the shops - there are two paths, an upper and a lower. You won't be
allowed to buy a broomstick or an owl, but you can look around the shops. On
the upper path is the wand shop, the broomstick shop, the owl shop, the potions
shop, and the cauldron shop. In the Potions shop, buy the Potion Kit Bag (10 Sc
- sickles). Don't buy any potions yet as you may run out of money. In the
cauldron shop buy one of each cauldron, Collapsible Cauldron (51 Sc) and the
Copper Cauldron (101 Sc). If you are planning to make potions later, you will
need both. Now go to the lower path. Here is the medical shop, the sweet shop,
the robe shop and the book shop. From the robe shop buy three Plain work robes
(240 Sc total), one Winter Cloak (150 Sc), on pair of Dragon Skin Gloves (62
Sc), one Pointed Hat (58 Sc), and one pack of Name tags (10 Sc). There is no
point buying the boots, as you have the hardened boot you won from the boss
battle. I would also recommend buying the Leather Belt (3 Sc) as it gives that
little bit of extra protection in battles. Now go to "Status/Equip" in the menu
and equip these items you have bought. In the bookstore, buy your School Books
(143 Sc). Now you may spend the rest of your money on some useful potions of
sweets. When you are ready speak to Hagrid (outside Gringotts') to leave for
the Hogwarts Express. Hagrid will the give you your birthday present of Hedwig
the Owl.

Quests - Get on the Hogwarts Express, Find a seat on the Hogwarts Express.
Follow the platform round to the train. Go to the far right and you will see a
family of ginger haired people. Speak to one of the boys with the black jumpers
and after a short conversation you can get on the train (follow the boys). Now
walk to the far left of the train and speak to the ginger haired boy who will
introduce himself as Ron Weasley. Hermione Granger will then ask you if you
have seen a toad, and teach you a new spell - Verdimillous Uno. The sweet
trolley will then arrive. Buy something or talk to her and then exit and return
to your seat. Draco Malfoy will arrive and try to steal your sweets (regardless
of if you bought any or not). You will then have to battle him. Once you have
beaten him he will give you a card combination. Now talk to people until the
conductor announces that everyone needs to change into their robes.

Quest - Cross the Lake at Hogwarts landing, Get through the Hogwarts Dungeons.
Follow the others down (talking to Hagrid first if you want to get healed) and
get into a boat. During the crossing, never run into the shore as you will have
to start it all again. It is also best to avoid as many of the monsters as
possible because if your HP reaches zero you will also have to start again.
Battle your way up the lake and land on the shore at the top end.
The dungeons are a good place to start leveling up your new spell -
Verdimillous Uno. The monsters are tougher so you will gain levels quite
quickly too. There are plenty of items and cards to be found in the dungeons,
but you should find them as you work your way through. On the last
floor, there is a boss who is quite difficult to kill if you have not spent the
time to level up previously. The best spell to use on him is Flippendo.
Whichever is your highest level. Follow Hagrid up the stairs and into Hogwarts.

Quest - Get sorted into a house.
Follow the other students into the great hall. You will be sorted into
Gryffindor. Go to the table in the bottom right and talk to anyone sitting on
it. Hermione will then call you over to sit next to her. The feast will then
start and be over in about a second, then its off to find the Gryffindor
common room.

Quest - Find Gryffindor.
Exit the great hall by the door on the left hand side into the entrance hall.
Go up the stairs and onto the first floor. You will then meet Peeves. Now you
can search around for all the items and cards hidden away in Hogwarts.  Talk to
everyone you can as they will tell you the fastest way to Gryffindor. Go down to the
bottom of the screen and go up one of the staircases. On this floor are two statues of Griffins.
Search the tail of the topmost one to find a passageway up to the 5th floor.
If you go left from the exit of the passageway, there is a set of stairs. Next to them is a corridor
which leads to the "Card Collectors Club." Go into this room and speak to the
boy on the left of the screen to receive new card combinations. There should be
one waiting for you. After each quest there is a new combination available, but
there is not much point going down every time, so pop in every now and then and
pick up several at once. Half of the combinations will be unusable as you don't
have the cards yet anyway! Exit and go up the stairs. Go up the stairs that are
then in front of you on the 6th floor to take you to the 7th. The "Fat Lady"
picture is the entrance to the common room. She is in the corridor about
halfway up on the left of the screen. Talk to her and she will tell you,
need the password to enter. Go back down the stairs and talk to Nearly Headless
Nick who tells you he would like an old school tie in exchange for telling you
the password (He is the ghost on the left hand side of the 6th floor - about
half way up). Go down another floor and enter the secret passageway you used.
Now go down another floor using the stairs at the bottom of the screen. Go down
the stairs at the top of the screen in to the entrance hall. Now search the
upper of the two gargoyles on the bottom left hand corner of the screen. This
should give you the tie. Go back up the way you came down (secret passage by
searching the tail of the top griffin) and return to the 6th floor. Talk to
Nick who will now tell you the password. Go up to the 7th floor and speak to
the Fat Lady and enter the common room. If in doubt about where to go, press
select to find out which floor you are on, then go up or down stairs to get to
the floor you want. Go up the stairs at the bottom of the screen to get into your bedroom. Search the
bed at the top of the screen to sleep when you are finished searching around.

Quest - Get to potions class, Find the ingredients for Snape.
Exit the dorm using the stairs at the bottom of the screen, and exit the
Gryffindor common room at the right hand side. Go down the stairs onto the 6th
floor, and then down again onto the 5th floor. Go through the doorway at the
bottom of the screen to find a passageway to the dungeon. Go down and left
until you reach the end of the passageway with three doors (one left, one right
and one down) go through the left one. Go to the top-left of the room and speak
to Snape, who will tell you to take a seat. You will lose one house point for
not being able to answer a question, and then Neville will burn himself on the
potion he is brewing. Snape will send you to look for the ingredients for a
potion to cure him - 1 x Boomslang Skin, 1 x Snake Fangs, and 2 x Beetles Eyes.
Exit the room the way you came in. Go through the door that is immediately to
your right as you exit the classroom. This is Snapes office. Search the picture
of a snake at this point to find the Boomslang skin. Now exit the office the go through the bottom doorway.
This will take you into the entrance hall. Exit through the main doors at the bottom of the screen.
Take the left fork of the path, and then the right fork to get to Hagrid's hut.
Enter through the gate in the fence. The Beetles eyes are in the bush at the
top left of the screen, and in the bush to the left of his front door. To find
the snake fangs, go back up the path and take the left fork in the path.
Professor Sprout is standing outside a greenhouse. Talk to her and she will
tell you that the snakes still have the fangs you need - battle them. After
killing some snakes and finding some fangs, talk to professor Sprout again and
she will award you some house points for pest control. You should now have all
the ingredients. Return to the dungeon (door on the left of the stairs in the
entrance hall and then left to get into the potions class) and talk to Snape
again. Snape then will deduct points for being too slow. He will give you a class list.

Quest - Find you next class.
You now have the option of which class to go to. It does not matter which order
you do them in, here are their locations and what to do.

Transfiguration.
Location: - 1st floor, door on the top left.
A candle has been transfigured into a purple rabbit. You need to find it.
Go down to the entrance hall and talk to Percy (ginger hair - standing at the
bottom of the stairs) who will tell you a purple rabbit has just hopped out of
the door. Go outside and then left and up. The rabbit should be here. Click on
it to catch it, and return to the transfiguration classroom. You will be taught
a new spell, and given 25 house points as a reward for finding it - Incendio
Uno.

Herbology.
This is the most time consuming class to finish.
Location: - Greenhouses outside (where you talked to professor Sprout about the
snakes)
Enter the far left greenhouse, and talk to Ron (far left table, at the top).
You will be issued with an Ingredient Encyclopedia, and given a Herb List. You
need to find all the herbs on the list.

Asphodel Root - Directly down from the greenhouse is a funny shaped bush.
Search it. Search other bushes like this as there are also other types of "funny" bushes.
Dried Nettles - Right hand pot plant beside the door. (inside)
Dittany - Follow the dirt track down from the main entrance and look in the
funny bush to the right (not the very first one, as this is another source of
dried nettles)
Wormwood - Follow the brown dirt track down to the main gate and look in the
funny bush on the grass to the left
Mandrake Root - Go down to the very bottom right and behind the trees beside
the fence
Arconine - There is a funny bush in the bottom right of the Hogwarts grounds.
Return to the greenhouse after finding all six of these herbs, and Professor
sprout will reward you by sending you to Snape to collect two potion recipes.
Snape is in his Office (where you found the Boomslang Skin). Collect these to
finish the class.

Charms
Location: - Second floor. Doorway at the top of the screen in the middle.
Enter and go to the top of the room and talk to Professor Flitwick. You may want to
have a pen and paper handy to note down the wand movements professor Flitwick uses,
as it changes every time you take this class.
Upon completing this class, you will be awarded 15 house points, and
given a new spell - Wingardium Leviosa .

Defense Against the Dark Arts.
Location: - Third Floor. Doorway at the top of the screen, on the left side.
Just before entering, Peeves will curse you. Enter the room and talk to
Quirrell who will tell you, need to find the counter curse. First of all go
into the library and talk to Madam Pince (Enter through the door opposite the
defense against the dark arts classroom and go down the stairs. Go to the
bottom of the screen at the middle. She should be sitting at a desk here). She
tells you the counter curse book has been missing for some time. Exit the
library. Peeves will appear and tell you the book you want might be being
studied by a muggle. You need to find the Muggle studies classroom. This is on the 5th floor, in
the top left hand room. Enter and Peeves will tell you to try watching TV.
Search the TV to enter a hidden chamber. Fight the boss in here to receive the
counter curse book. The best spell to use against this boss is the strongest
Flippendo you have - by now it should be Flippendo Duo. Go into your inventory
and use the book to remove the curse. Return to the library and return the book
to Madam Pince who gives you 25 house points. Now return to the defense against
the dark arts classroom and talk to Quirrell who will give you 10 house points.

History Of Magic
Location: - 4th floor, door on the left hand side at the top of the screen.
Enter the room and talk to Neville to wake professor Binns up. Binns will give
you a pass to go back to Diagon Alley to find to person selling the Circe card.
Exit the classroom and Hagrid will be there and will take you to Diagon Alley.
You start outside the wand shop. There are different items on sale in most of
the shops now, so it may be a good time to stock up on potions and buy new
items (if you wish). If you go towards Gringotts', the man selling the card
will be to the right of Hagrid. Take to him and pay 10 Sickles for the card.
The only catch is you have to go to his vault in Gringotts' to fetch it. Follow
him into Gringotts' and speak to him again. The manager will show you to his
vault. Kill the boss in there to receive the card. The best spell to use on the
giant rat is Incendio. Return to the lobby and exit the bank. Talk to the man
again, and Hagrid will take you back to Hogwarts. Talk to professor Binns to
end the lesson.

Broom Flight Class.
Location: - Outside. Exit through the main doors and take the right hand path,
then the right hand fork, and the right hand fork once again. Neville will
break his wrist and drop the Remembrall. Draco will steal it an take to the
air. You need to catch him. Keep "right" held down to keep
your speed up, and try to avoid as many obstacles as possible. As soon as you
can, fly into Draco. You can return to this area later to race against an owl.
Winning will earn you some house points. All of your lessons are over, you return to the great hall for dinner where
Draco challenges you to a Wizards Duel.

Quest - Go to the trophy room for the midnight duel.
Using the stairs (as the secret passages are locked) go down to the 3rd floor -
carefully avoiding all of the members of staff. The trophy room is at the
bottom of the screen in the middle. Walk to the left end of the room, until
Filch and Mrs. Norris appear. Exit through the door beside you. Exit this room
through the door on the right to bring you out into the main hallway. Where you
will all hide in a previously locked room and meet "Fluffy" (those of you who
have read the book or completed more of the game will understand this). Now
return to Gryffindor again using only the stairs and avoiding the members of
staff who seem to never sleep.

Quest - Rescue Hermione from the troll.
Upon hearing you insult her, Hermione runs off to the girls toilets crying.
Professor McGonagall asks you to find her. Talk to the girl on the left hand
side of the entrance hall who tells you where she is. Quirrell will the arrive
and announce that there is a troll in the school. Go up to the first floor and
enter the door the troll goes through. The best spell to use here is
Verdimillous which should be at least Duo by now. Another good one to use is
Mucus Ad Nausium which you learned from Peeves when he cursed you. The only
downside to this one is you need 80 MP to use it, but it takes 20 HP off of any
enemy cursed with it each round. Having beaten the troll exit and go down to
and enter Hagrid's hut.

Quest - Find your Christmas Presents.
It Christmas! So what does Peeves do? Steals your presents! Luckily they are
not far away. Go to the 6th floor and enter the door above the stairs you just
descended. Walk along this corridor and into the room at the end. Search the
top chest on the right hand side of the room to find your presents. Filch
catches you and drags you off the Professor McGonagall who, since its Christmas
only deducts one house point. Return to Gryffindor. And your dorm to open you
presents.

Quest - Explore Hogwarts at night.
Go down to the 3rd floor and enter the library. (Door above the stairs on the
right hand side) Go down the spiral staircase and enter the restricted section.
There are two spells and a potion recipe here. Collect the spells and recipe, then set off an alarm (all can be found by searching the shelves). Exit through the right hand side stair case - thus avoiding Filch and Madam Pince. Exit through the
door on the left hand side on the 3rd floor. If you try to go down a flight of
stairs here, Snape catches you so all you can do is go up. Avoid the various
members of staff and make your way to the 5th floor. Go into the corridor on
the right hand side of the floor. Continue through and enter the room at the
end. After a cut scene, return to Gryffindor and bed.

 Quest - Go to Hagrid's Hut, Catch 5 chickens.
Go to Hagrid's Hut and enter. After a cut scene exit and catch 5 chickens. The
best way is to corner them and click on them.
Like all chickens everywhere they are very stupid and always run away from you.
To collect a chicken, you have to battle and KO them. For each battle, you only
receive one chicken. This is a good time to level up your spells and gain EXP.
Chickens can hardy damage you and
you can keep battling them for as long as you like. Once at least 5 have been
caught, return to Hagrid's Hut. After a cut scene, you will be back in the
library. Now return to Hagrid's Hut and catch the escaped Norbert.
This is the same as the Owl chase, and Malfoy chasing on your broom only with
different graphics. Once Norbert is caught time will pass until Saturday.

Quest - Take Norbert to the astronomy tower.
Go to Hagrid's hut and enter. Collect Norbert and take him back up to the 7th
floor. The astronomy tower is through the top door on the left hand side of the
floor. Follow the corridor round and through the doorway at the end. After a
cut scene, go back down. There will be another cut scene now (one which is
unavoidable).

Quest - Detention, find the injured unicorn.
Go down to the main entrance hall. Now go down to the path below Hagrid's hut
(the left fork), where the others are waiting. After a cut scene you will be in
the forest. Here there is only one way through, but a lot of dead ends. You more or less
follow the path round, going down most of the time. After switching parties,
you will come across the unicorn, and after an interesting, yet disturbing cut
scene you will need to return to the main entrance hall. You will then need to
return to Gryffindor. Note the "griffin" secret passageway is unlocked.

Quest - Find Dumbledore.
Go back into the main building (if you have not already done so search the
library for potion recipes and new spells - especially Locomotor Wibbly as
this will be very useful). Now go to the 1st floor and speak to Professor
McGonagall who is standing in between the two sets of stairs at the bottom of
the screen. Now return to Gryffindor, collecting the card combinations on the
way (5th floor, bottom left).

This is it, the final stretch! WARNING. READING PAST THIS POINT WILL SPOIL A
LOT OF THE GAME FOR YOU. IT CONTAINS A LOT OF SPOILERS!

Quest - Go to the forbidden corridor.
Go down to the 3rd floor (if you feel you need to, stay around here and level
up - don't use any of your healing items, but instead allow your HP to reach
zero and get healed for free. Make sure Incendio is leveled up to at the very
least Duo as you will need it unless you have a lot of HP and MP). Now go to the
bottom right hand corner. Enter, and after a short cut scene you will fight the
first of the final bosses - Devil's Snare. Use Incendio on it as this is the
only spell (Except for Mucus Ad Nausium) that does any damage worth speaking
of. Concentrate on the big plant in the middle, and if you have enough MP use
Mucus Ad Nausium on it to help kill it faster. Go into the next room where
thousands of keys are flying around. On your broom fly up to the top of the
screen and go to the center and hit the stationary gold key. Go into the next
room. Here you will have to fight giant chess pieces. Here is the easiest way
of defeating EVERY boss from now on:
1) Cast Locomotor Wibbly on them to paralyze them.
2) Cast Mucus Ad Nauseam on them to poison them. (Regardless of your level this
will always take 20 HP from them each round)
3) Replenish your MP if necessary, and if they have started moving again cast
Locomotor Wibbly on them to paralyze them once again. Otherwise click on
"Flee". As it is a boss you can't escape, and they will lose 20 HP every time
you try to escape. They should only be able to attack you a maximum of once -
at the very beginning of the fight. Don't worry about healing this lost HP as
you will always level up at the end of one of these battles which replenishes
your HP and MP. Kill the 3 chess pieces and go to the next room. There is a troll on here, but
it is already out cold so carry on to the next room. Click on the table and try
to mix the potion. I really can't help you here, as it is simply common sense
and a different code each time. Having mixed the potion go into the final room.
Kill the two bosses in here. Now sit back and enjoy the end of game sequence
where a lot of loose ends are tied up. You also find out if you have earned enough House
Points to win the House Cup.
Once the game is finished, you can restart from your saved file, with all the
experience, cards and sickles you have collected so far. It is much easier the
second time around as you don't have to spend all that time leveling up.

Trashed due to plagiarism.

http://www.gamefaqs.com/gbc/565542-harry-potter-and-the-sorcerers-stone/faqs/14791