• allocateBook• createBookInventoryElement• createBookPurchaseElement• createBookPurchaseMenu• createInventoryBooks• getAllocatableBookCount• getBookData• getBookshelves• getBuyableBookCount• getCurrentBookshelfObject• getMaxSkillBoost• getNextBookOfSkillBoost• getSkillExperienceBoost• getSkillExperienceBoosts• getUnallocatedBooks• isBookAllocated• purchaseBook• registerBook