I began playing a few months ago and have read the first three volumes in Janice Kim's Learn to Play Go series. I definitely got much more out of the first two than I did the third so I am debating whether or not to read volumes four or five.
I have a blog which will likely accumulate quite a bit of go-related material as time goes on.
I find myself playing a lot on IGS these days. I really love IGS for its awesome glGo client and game selection.
Here is a link to my IGS statistical summary and game listing (built using a script I wrote, available at the bottom of that page):
Here is my current IGS rating graph, also created with a program I've written:
I also play on KGS. I love KGS for its community, historical information features, and avatars. :)
Here is my KGS rank:
Here is a link to my KGS games:
And here is a link to my KGS summary:
I do play on DGS and LittleGolem but, for some reason, I don't get into the games like I do in a real-time game. I do seem to enjoy Little Golem much more than DGS, but I am not quite sure why at this point. :)