Oh happy day!
Today you can get a good majority of Raymond Carver's books for your ereaders. I've been waiting for this ever since I bought my very first Kindle, which was probably five years ago or so.
Short Cuts is an excellent place to start if you want to sample his work. Otherwise, go for Where I'm Calling From which is a monster collection (although it doesn't feature one of my favorite stories, "Will You Please Be Quiet, Please?" but that one is featured in this one).
His poetry collections are also available. Right now, I'm really enjoying All of Us.