I don't see how people who don't read the books would enjoy the show. There is too much missing information. The larger plot hasn't even been hinted at yet, the three eyed crow and Hodor are an afterthought. Shae's character is all wrong. In fact, the only one that I'm impressed with so far is Dany. The rest aren't nearly as interesting as their book counterparts.
Tyrion still steals the show, and you don't even get to hear all the hilarous inner dialogue he has during his chapters. Such a waste...