How to cover a book that has a soft cover?

Well I have a soft cover book of its nearly 500 pages long and resembles a ordinary textbook, I have no idea how to cover it. Power someone give me some ideas plz?

It depends on whether the book is yours and you want to protect it, they sell clear contact paper that you can cover the book and it will protect it better than a bag paper, but will not be released if not using it if the book is not yours. The color sell for if you do not see the cover. large Works.