RE: Rich Dad Poor Dad, I'll sum up the only useful advice in the book right here: Make your money work for you. Avoid reading the book unless you want a good laugh at how completely out of touch with reality some scammy rich dude can be (and even then there are plenty of modern examples).
That said, the advice is not really applicable in this situation. Advice on how to properly save or invest does someone who does not have the excess income to save or invest no good :(
The only advice I can offer is:
1) Accept the help. Whether it be from friends, community, or GRM, they are essentially filling the role of supportive family you may not have.
2) If you are in a dead town, figure out a way to get out, ASAP. I saw that hinted at by others, and that's probably the biggest opportunity on the table right now. It doesn't mean go move to downtown DC or something, but whats the nearest small/medium city that will have job opportunities on the table with real pay and a cost of living that's reasonable?
3) Regarding college, paying for your kids school is a noble goal, but it certainly sounds like given your current situation, its not really on the table. Investigate other routes to pay/help them. The most helpful thing you can do though is probably to establish your household/transportation/etc. as rock solid so they dont have any of that worry on their mind on top of their schoolwork.
How did I "succeed" at life? I was dealt the right cards. Grew up in a financially stable family, went to school, got a good job. Made plenty of mistakes along the way, but with a financially stable family to fall back on in an emergency it allowed me to be more risky, dumb, etc. I didn't figure out how to properly save/invest until age 30, but I hadn't made any major life mistakes prior to that would have really set me back. Even then, as mentioned earlier, "success" is in the eye of the beholder.