1) Books add knowledge

Books are bought mainly for this purpose. They are the best mode of imparting education since school days for any one of us. Tough books are found on many topics, the number of books found on education related topics like science, maths, social etc. occupy major share. Even one can know regarding their health and what doctors might prescribe by books on pharmacotherapy.

2) Enhances imagination power:

Have you ever noticed reading a novel or a story book.

 You will find that your mind has framed a pictures of what you read. Supposing the novel you were reading describes a desert or sea related incidents. Automatically your mind frames the images related to them. This is possible even if you have never seen a sea or desert before. But due to the description in the story line the images are formed. Thus reading can enhance imagination capacity. But where can this be useful? Imagination can be useful for those in research and technology related fields. Even it would be good for students reading physics, chemistry and maths as they need imagination skills to understand

 All the books, publications are screened well for grammar, vocabulary, spelling mistakes etc. by the publishers. So they can be quite perfect in terms of usage of language, grammar, words etc.
Reading them helps reader improve his vocabulary in communication and writing. Since one comes across new words, phrases etc. Reader gets accustomed to use them in his daily language.
Even the sentence formation, use of suitable words for expressing some view will be fine tuned.

4)Give you knowledge for teaching and speaking

 If one reads suitable books, he gets hints and additional points to include in his seminar or oral presentation. A teacher well prepared will give better lecture than on who is not. This preparation mostly includes from subject related books.

5)Helps you fall asleep: