I've listed 25 different tarp shelter designs to help you get started. Each configuration has its pros and cons and there isn't really a perfect design for all occasions. You'll have to chose the right one depending on your situation or you could just try
A little bit of a wacky site that had a gun giveaway when I clicked on the link. This is definitely useful to find the wood that you'll use to roast the decapitated zombies that litter your lawn. Standing in fire, bad.