Prepping on a Budget

So, TEOTWAWKI (the end of the world as we know it) is coming. How do you prepare? Better yet, how do you prepare on a tight budget? Well, the way I'm doing it is by buying reference books and looking for the easiest and cheapest solutions. Sure, I'd love to buy a farm, farm animals, and all kinds of alternative energy creating toys, but that is not going to happen. I plan to buy books to reference, and hopefully take some classes, to learn useful skills. And I'd like to have items I may not be able to use, but another survivor may be able to for the benefit of us all. Surgery tools, dental tools, extra fabric. If we can't get items we need, like clothes or soap, we had better know how to make it!