Season 1 was Book 1, Season 2 was Book 2, and Season 3 has been about the first 60% of Book 3. Now as to the next few seasons, I think they're going to take the events of the rest of Book 3, and then Books 4 & 5, and tell the events chronologically. I think we'll see elements from Books 3, 4 and 5 all in Season 4, just due to the nature of the way they were written. It also means that some seasons are going to see shorter shrift from certain characters. For instance, I don't know what the producers think they're going to do with Theon, but after watching him get tortured for all of Season 3, I don't want a whole other season or two of it, and based on future events I'm aware of, it's a while before his situation improves. (In the books, I don't think he's even in Books 3 or 4).
Now I feel like I want to reread them.
AMC's THE KILLING - I'm really enjoying the setup this season. It's already better than the first two seasons. Linden (Mireille Enos) and Holder (Joel Kinnaman) are back on a case tracking a serial killer exhibiting an M.O. of a killer (Peter Sarsgaard) already on death row. It still has that patented moroseness, but this time they've promised the case will be solved this season, and so far so good.
NBC's THE GOODWIN GAMES - Wealthy patriarch (Beau Bridges) dies and leaves a series of challenges to his three adult children in order to determine who gets his inheritance. The three of them aren't really mean or self-absorbed, but since this has already been cancelled, no need to see just what hoops they have to jump through.
NBC's SAVE ME - Anne Heche stars in this comedy about a woman who has a near-death experience and decides to change her ways, but she also has episodes where she can read others' thoughts. It was hammy and I couldn't make it through a full episode.
FOX's DOES SOMEONE NEED TO GO? - One of those sadistic reality shows where employees at a company are asked to vote on who they think should get fired. It's worse than the "emperor hanging out with the peasants" aspect of Undercover Boss. It's amazing to see all these companies where they're all Americans, in the same building, working side-by-side. (I'm used to my co-workers being all over the world.)