You guys should give the show a try; it's fantastic!
And if you like it then you can also give the books a try :3
I usually like books better, I think I'll try those first. They totally ruined the Southern Vampire series (aka Sookie Stackhouse novels, which are not TrueBlood. It's very hard for me to watch the show because I read all the books, except the most recent one. I know that they had to make the changes they did and I know Charlaine Harris is okay with the changes, but it's hard for me to go from book mode to TV mode. I'm constantly saying, that didn't happen like that! BTW, for whoever watches the show, the totally changed the end of season one from the book. TOTALLY different! I stopped watching/wanting to watch.
I watched the show first (GOT) and now I'm reading the books, but a lot (I think all to be honest, haha) of hardcore fans of the books seem to really love the tv show too, and they have changed some details here and there but a lot of scenes are like pretty much the same to the books, dialogue and all
But whatever you choose, give them a try! I didn't know anything about this series until last month and now I'm obssessed, hehe