I'm not exactly what you'd call a "people's person"
If I was ever in this situation I'd walk up to their alpha and put an end to his heartbeat, then claim the group for my own.
First thing I do is make sure both genders are sexually satisfied, so I'll encourage them to workout, then fuck eachother's brains out which will keep them stress free and in shape, also they'll be my fucktoys 
I'd definitely help with practical things...setting up/fortifying the camp, gathering food and other resources, yep maybe even some nurse work. I have some mathematical and mechanical knowledge, and could help design things. I'd try to stay out of "keeping order" unless I were the leader, as keeping everything in line can be messy.
What would you be doing?
by MikaHaha sorry, I meant that they also survived in one way or another :)
Okay, I'll play a long...
Assuming I joined a group of survivors, I'd likely be a scout because I'd rather be out doing something than sitting on my ass doing nothing.
One thing I can't stand is other people telling me what to do, so if I'm not the one in charge, I'm bound to have a few issues with anyone who is. Not sure how long I'd last in the group for that reason.
That's also why I think it's better if I could go out and scout alone or with at least one other person. That way I have some time away from the group for awhile.
I'd leave everyone. In any form of apocalypse or catastrophe people are always your biggest threat whether it be direct(armed assailant) or subtle(sharing resources until you run dry). Introverts have an edge during these scenarios.
If I met a group of individuals like myself it wouldn't end well. but hypothetically if it did I'd act as the forward observer or scavenger. Any title that gives me an excuse to exclude myself from the group at any time while still having direct access to their pooled resources is ideal. I'd teach nothing, I'm probably going to come in direct conflict with them at some point in time anyhow.
Okay guys, I might as well.
This shit is real. Go be doctors.
http://en.wikipedia.org/wiki/Humorism
Humorism, or humoralism, is a system of medicine detailing the makeup and workings of the human body, adopted by Ancient Greek and Roman physicians and philosophers, positing that an excess or deficiency of any of four distinct bodily fluids in a person - known as humors or humours - directly influences their temperament and health.
http://en.wikipedia.org/wiki/Humorism#Four_humors
The following table shows the four humors with their corresponding elements, seasons, sites of formation, and resulting temperaments alongside their modern equivalents:[7]
by Turncoat"One thing I can't stand is other people telling me what to do, so if I'm not the one in charge, I'm bound to have a few issues with anyone who is. Not sure how long I'd last in the group for that reason."
You seem to be doing okay with it now. Is Luna the exception or something?
Luna doesn't tell me what to do. So, I haven't had any reason to have an issue with her in that regard.
Fair enough, I guess the Dead Rising model of betrayal doesn't have to be based completely off insanity.
Still reminds me of The Hall Family a little bit for some reason.