Just been reading books that got adapted series, Dexter and Game of Thrones.
Isn't it amazing that the books cover soooo much more than the series itself?
People say that you should read the books first. But for me, I think it's a lot better to watch the series before reading the books. This way you got to see the differences without judging the characters and the writers!
I see people tend to read the books first and then bash about the episodes of the series that "how much wrong they got about it"
Come on! it could never ever be the same to put all the details in a scene. When you read the books first, you eventually build up an imaginary world as you continue reading and when you watch the series or the movies you immediately judge the scenes with the book and mostly just curse the writers/directors etc. :D it's so typical that it hurts!
This way it's almost impossible to be objective about the plot/turn of events.
So relax, watch the series first and then go and read the books. This way you can visualize the characters you love that you get accustomed to, the scenery, the relationships better and the scenes become more vivid with the words from the book. ^__^