Read the comics, they are following pretty darn close to the comic story line with some character situation changes, but the story line itself is pretty darn close.
Man I am so bummed. I just started watching The Walking Dead like a month ago. I ran through seasons 1 & 2 pretty quick and was a little bummed because I don't have AMC so the only way I can find to see the new episodes is via Amazon or something similar for $1.99 an episode. Then I find out that AMC is running the first episode of the season for free on their website - but life happens and I was too busy to watch until this evening and when I checked it out at AMC I find that they were only running it through October 31st....No Bueno.
I may just have to forget all about it again and wait until the season is over and shows up on Netflix.:-(
This season kicks butt. Rick has finally earned his man card. I want some zombie pack mules. I'd also like a man cave full of aquariums with zombie heads.