Discuss the books you have read. Use the following.
The book is … (interesting and easy to read; full of information about …; very useful to give you knowledge of …)
What makes this book so popular is that … (it raises your interest in …; it is the type of book that makes you think; the events described in this book are all true; it is very original and very funny; the book shows real life to the reader)
The reason why the book is so interesting (popular) is that … (it makes easy, interesting reading; this is a very truthful story; the author has described the atmosphere of the time with great skill; it will be give you a real feeling of what life is like)
As for me, I prefer … (an excellent adventure story; an amusing story for light reading; a book full of interesting, real facts and pictures)