First Foray into Second Life

I now have a Second Life. In SL I'm Ernestine Snoodle. Tonight I went to a presentation on Project Based Learning given by Jane Krauss and Suzie Boss. I enjoyed it and it was quite interesting, but I'm somewhat overwhelmed by what I need know how to do in SL. It took me quite a while to figure out just how to sit down at the amphitheater and forget learning how to raise my hand during the presentation, instead I accidentally jumped up in the air when I tried to follow the commands people were sharing in the chat. Opps. I have a lot of questions about how to move around in SL. After the presentation I wandered into the ISTE headquarters building and started hearing voices of people talking around me, but I couldn't really see them. Hmm... I don't want to be a lurker, but I'm not sure where your SL person goes when you quit or log off. Do you store your person somewhere? I've definitely got some reading and figuring out to do.