I heard each season corresponds to a book - can the other readers confirm that?

Is anyone else watching the show after having read the books? Care to comment on what it's like, is it worth watching or does knowing roughly what is going to happen ruin it? Walking Dead departed drastically from the comics, so watching and reading didn't matter. Just half a dozen episodes in, I've already noticed some departures, but I think they're more different storytelling rather than actually changing the plot.