This week's book giveaway is in the Agile and Other Processes forum. We're giving away four copies of Software Teaming: A Mob Programming, Whole-Team Approach and have Woody Zuill and Kevin Meadows on-line! See this thread for details.
It's really hard to say which certifications will be most useful to you - of course it depends on your interests and on your local job market. That said, I'd say that the SCWCD and SCJD seem the most practical to me.
Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)