After you've read the all-important Survival Guide, fall down the ePlaya rabbit hole. A new subject here is extremely hard to find.
If you don't see what you're looking for, use Search or Google goggles eplaya
or realistic food eplaya
or house rules for RVs eplaya
or diabetes eplaya
(and so on) and you'll be able to find the stuff you want.
If you get really, really stuck, tell us what you've tried first in your mission to be self-reliant, and we'll mostly likely geek out with you.