Eragon, by Christopher Paolini, is a moderately advanced book that is an awesome high fantasy. It literally creates an entire world, not unlike Lord of the Rings. The main premise is based around Dragons, who with the Riders were once the peacekeepers of the world, until they were killed and the human kingdom usurped by the evil Galbatorix, a Dragon Rider that killed almost all the others and took over.
The book follows Eragon, a boy who finds a dragon egg. It holds a wonderful vocabulary with bountiful amounts of text clues to help understand it, even without knowing the words themselves. This amazing book creates entire cultures to fit the different races; similar to the stereotypical human-elf-dwarf-orc, or Urgal, refurnished to be much better, deeper, and realistic.
Along with a completely revamped magic mechanic that no one would have been able to think of, Eragon is simply incredible for a book. Emotions play a large part, and the book accurately demonstrates behaviors befitting each role, yet with their own twist; their little something to make them truly special and individual as a character. Read it; you will not be disappointed, given you can sufficiently understand it.