I enjoyed it, though I only read the last three books (as I started reading last year to continue from where the show left off).
If you like the show, you might find the book has more to offer (and personally I prefer the book where parts of the story are different). The actors do a great job portraying the characters, so having watched the show before reading, you can easily "hear" the characters' thoughts and spoken words in the actors' voices.
If Hound looks this tall i'd love to see the Mountain-that-rides, bet he wont even fit in the picture I can't exactly place some characters, like who's the dude on the bottom left? I'd guess it's Theon, but not so sure. Also I'm pretty certain it's Ygritte next to Jon, but we don't see her fiery hair, which is like her the most defining feature. Then again it may as well be Coldhands (cowl over the face and all) and not Ygritte And Hodor isn't supposed to be grey haired, he's a lad no more than 20-25 years old, he's just this big cause of giant's blood he has in him.
know that the 4th one is the spoiled kid who kills people for fun because his family is royalty (If that's not exactly it... let me know... I've never seen the show and I might not want to watch it...)