Book Look

I check every shelf
for a popular book.
I can't seem to find it
no matter where I look.

I check the entire library,
including the encyclopedia.
Nothing about this book
is listed under "media".

I get asked to "Like".
I get asked to "Friend".
But without my own book
I can not comprehend.

The book I'm looking for
is filled with many faces.
Maybe I am looking
in all the wrong places?

Dad suggests the Internet,
so I have a look.
Finally I understand...
Facebook is not a book!