All these books should have summaries, but the summaries are poorly written. For a sum of sickles and house points, turn in a good summary of one of these books!
Key:
Can be read
No book
Book is being written
You've read
Potions:
Potion Remedies
The Potions Cook Book
Astronomy
Transfiguration:
A Transformer's Guide
Charms:
Standard Book of Spells Deluxe Edition
Defense Against Dark Arts
Herbology:
Herbs and Spices
History of Magic:
Care of Magical Creatures:
Magical Creatures of the World
Muggle Studies
Magical Objects
Diviations:
A User's Guide to the Inner Eye
Magical Lands
Arithmacy:
Basic Arithmacy
For multiple ideas, try A Student's Guide to Hogwarts