And after Eragon, comes Eldest, then Brisingr and finally Inheritance.
… and we start to see other story lines apart from Eragon‘s with more detail. Now we see what’s happened at Carvahall (his hometown) after his departure and the perils the villagers have had to endure. And here we start to really get to know Roran, Eragon‘s cousin. And he is a whole other brand of hero, but a hero of this book nonetheless.
It also includes the appearance of more dragons, and more information about Eragon‘s origin and some facts about his mother, and of course we get a glimpse of the elves at the heart of their city while Eragon‘s training moves forward.
After Murtagh‘s revelation about his relationship with Eragon, now we start to see them battle each other. Magically enhanced hatch-ling versus not-quite-fully-trained youngster. Galvatorix dark magic starts to show, and the extent of his power is fairly scary to say the less. The war seems to be brewing rather nicely, with strategic moves in either side.
Roran and Eragon are once again reunited, and after the rescue of Katrina, we also get to see their relationship advance, while Eragon seems to focus on his duties rather that his slighted feelings for Arya.
The last book in the series, gives conclusion to everything that has been brewing, including the true origins of Galvatorix‘s magic. We learn a lot more about the dragons, his origins and the downfall of the riders. It also presents us with Saphira‘s perspective, and that lends a unique point of view to everything, especially her relationship with Eragon.