1. Comic
1.1. American comic books
1.1.1. Underground comic books
1.1.1.1. e.g American Splendor
1.1.2. Alternative comics
1.1.3. Graphic novels
1.1.3.1. e.g. American Born Chinese
1.1.4. Digital graphic novels
1.2. European comics
1.2.1. Franco-Belgian comics
1.2.1.1. e.g. Dungeon
1.2.2. British comics
1.2.2.1. e.g. Judge Dredd Megazine
1.2.3. Italian comics
1.2.3.1. e.g. Tex Willer
1.2.4. Czech comics
1.2.4.1. e.g. Lips Tullian
1.3. Japanese manga
1.3.1. Target readers
1.3.1.1. Children manga
1.3.1.2. Teenagers manga (Boys)
1.3.1.3. Teenagers manga (Girls)
2. History
2.1. Starting with tablet , scrolls, and sheets of Papyrus.
2.2. Then hand-bound, expensive books, called codices, appeared
2.3. Eventually lead to the mass printed tomes prevalent today.
2.4. Contemporary books may even have no physical presence with the advent of the e-book.
3. Processes
3.1. Layout
3.2. Printing
3.3. Binding
3.4. Finishing
4. Fiction
4.1. Novel
4.1.1. Web novel
4.1.2. Psychological novel
4.1.3. Chain novel
4.1.4. Wuxia
4.1.4.1. e.g. The Return of the Condor Heroes
4.1.5. Social Novel
4.2. Picture book
4.2.1. e.g. The Tale of Peter Rabbit
5. Non-fiction
5.1. Nonfiction films
5.1.1. e.g. The Thin Blue Line
5.1.2. e.g. Friday Night Lights
5.2. Dictionary
5.2.1. e.g. Oxford Dictionary
5.2.2. e.g. Cambridge Dictionary
5.3. Academic paper
5.4. Recipe
5.4.1. e.g. The Art of Cookery made Plain and Easy
5.4.2. e.g. American Cookery
5.5. Guides and manuals
5.6. Scientific paper
5.7. Textbook
5.8. Biography
5.8.1. e.g. Diana: Her True Story
5.8.2. e.g. Steve Jobs