Like crazy. I loved the books, though.
There's a lot to like so far. It's pretty true to the books, it looks great, and most of the acting is top notch.
Some misses: the motives of some the characters are lost without time to expand on the backstory (the Dany/Drogo stuff), not much in the way of why the direwolves are important (they're not shown that much), and some of the acting by the kids is up/down.
Hopefully folks that aren't familiar with the source material are able to keep up on who's who and what their motivations are. After things get setup the first few episodes, events will start to snowball into some crazy shit.