A book bag for easy carrying and accessing includes a detachable wallet styled book assembly. The wallet has multiple pages with transparent sleeves so that information can be presented much as a conventional book. This book bag permits a particular subject area to be collated and presented as a book within a book bag. The book does not require removal from the book bag. The detachable wallet can be quickly and conveniently replaced with another so that updating new study material for students or others can be easily performed.