The Notice Board
If you are looking for 'Holidays With Hags' come out of the main doors, run along the cobbled path, through the tunnel until you are facing Hagrids Hut, Herbology etc. Then, turn right and follow the castle wall all the way round to the right and eventually you will see the book on the grass.
We have more cheats and tips for this game here, Harry Potter and the Chamber of Secrets cheats
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