Hayden Christensen gets a very hard time for his portrayal of Anakin, as did the boy who played him in Ep I.
I think both actors were simply miscast and that the part was badly written for them. In Ep I the boy was too wholesome. When Yoda says he sense's fear in him it's incongruous with all that we know of him. He was a pod-racer in races where no human had ever finished, and competitors died every race. It didn't work. The boy was great at the wholesome elements of the character, but where was his fearful side?
I also think the role of Anakin in Eps II and III was an incredibly hard one.
According to Michael Kaminsky's "Secret History of Star Wars", when the prequels were cast they were not about Anakin's journey to become Darth Vader. They were a discrete trilogy dealing with earlier events. Obi-Wan Kenobi was supposed to be the central character. The scripts when shooting began were quite different to the movies we have now.
When Ep II had finished shooting, the story (focused around Obi-Wan) didn't work very well. The Padme - Anakin romance was a better way to drive the plot, so it was edited to make that one of the main plot devices, and Obi-Wan Kenobi's character was reduced in significance and screen time (you may have noticed that Ewan McGregor still got top-billing though).
Ep II's new focus then helped determine Ep III.
I've recommended Kaminsky's book here before. It is well worth a read. Those of us who grew up with the Original Trilogy will recall TV specials and interviews George Lucas gave in the 80s, and he said very different things over the years. Kaminsky seems to have had access to transcripts of these interviews, and earlier versions of scripts for the first 6 movies. I think it's quite authoritative.
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@ufcgrad93
There are two new books. Catalyst and Rogue One. They do relate to the movie. Catalyst tells the lead up to the movie, and Rogue One is, of course, the novel of the movie.
Are you thinking of the Rogue Squadron books by Michael Stackpole and Aaron Allaston? They were about Wedge Antilles and what happened to Rogue Squadron after Return of the Jedi.
See
http://starwars.wikia.com/wiki/Timeline_of_Legends_books