I have read Eragon, and I guess I'll kinda give a little outline on it.
First off, the writer started it when he was 15. So don't expect a grand fantasy world that includes coniving politicians and great battles that number in the hundreds of thousands.
However, it is a very good book. The story is well-thought-out and the characters are believable. The journey that the young boy (main character) takes is long and full of adventure, but I personally liked it the most because there was someone who died who was close to the boy. A lot of writers keep their main characters...in my opinion, too long.
Other than that, the world that it takes place in is also very well done. It includes dwarves, elves, and weird evil beings. I personally recommend it.