Books are Cool, Books transfer Knowledge and intercede Power.
Books are also looking nice within a bookshelf and a book-wall is simply perfect.
Some are taking Paperbacks/ Pocketbooks. Others like me, are taking always Hardcover. My Bookwall has collected during the time arround 1600 Books. King, Brown, Rice, Tolkien, Crichton and many more are sharing the shelfs with Nonfiction for Computer following up with Engine-Restauration etc…
For Simplicity i do made below several different categories.