Nowhere, because it's still a copyrighted book. You can find classics or books with author's permission online, but you won't find Eragon because the author still makes money selling the books. I recommend going to a library if you want to read it.
You can read young adult books at a library.
There are many download sites where you can find it. My favorite is 4shared.com. It has practically everything in there. Or you can always borrow it from a friend.
In the libary ofcourse
if you want to be sent to jail for reading a book illegaly.
how can you read among the enemy online free
You can Read Lover Awakened for free online via the Read Free Online website. The book is written by J.R. Ward.
You can read Tsubasa Chronicles online for free at either onemanga.com or mangafox.com
You cannot legally read those books online for free.
You can go to http://google.com and look up: read Ingo online for free
There's no place to read it online for free, it's illegal to do that.
Onread allows you to do that, you can read it online free no registration required.
You can read it for free on a website called onread.com
You cant read Eclipse online nor read it for free. You actually have to buy the book.
See the related links for an accurate website to read manga online for free.
You can read free online Filipino pocketbook stories at the related link below.