Before I move on to the details, I can save some readers a lot of time: 4e is “balanced” because they just removed a huge number of options. 4e characters just don’t do as much as 3e characters. They can’t. The rules aren’t there. Once you accept that, it’s a pretty fun game, but coming to it from 3e is a cold and bitter shock, especially if you play 3e at the high end of optimization like I do.
He's got the lowdown from the perspective of someone who has mastered 3e, and it's not exactly pretty, but it is very interesting. And don't get annoyed when you see he stops after character creation. What he's reviewed so far makes up a good half of the book.
No, I'm serious.
No, I'm not kidding. The character class section takes up a giant chunk of the book, since it includes all their powers and abilities. And that includes spells.