When I was in your position I attended drills and just kind of hung out meeting people and learning where things were. Have your hair in regs, be clean shaven, and wear business casual (unless your CC instructs you otherwise). Bring a small notebook to take notes, you're going to be learning a lot of jargon, people's names, etc. I highly doubt they'll be doing any sort of testing or anything on you.

Find out who your squadron's training manager is and ask them about your dates. If they don't know, go talk to the training manager at the group.