Book or e-book

I prefer book but many frens like to get knowledge from e-book.Which do u prefer ?

i use both books & e-books but i prefer book then e-books but both are highly useful & used by me but book is used most of the time.

I'd rather have the pages in my hand. Pushing a power button isn't quite the same as opening up a book.

For me it depends on the availability, necessity and urgency of something you want to know or learn. If you want to learn ASAP, you will not wait for how many days shipping or searching from any bookstore the book you wanted. I like books and I have a lot of books collections. But I am open to choose e-book as well in some occasion.