First off, the newbie questions thread is here: http://smf.cataclysmdda.com/index.php?topic=14.0
But to answer your questions:
1: You can set anything flammable on the ground and start a fire on it, as long as it’s not indoors. If it’s indoors you’ll set the whole place on fire, but outdoors just drop a piece of wood on the ground and it’ll burn just fine. Just don’t stand too close to it without some way of dealing with the smoke, like a filter mask.
2: You can make a fire drill with two skewers and a 6-inch string. You can get skewers by applying a knife to a 2x4, and a 6-inch string by either disassembling 3-ft strings from windows, or assembling them from thread/animal sinews. You need 2 survival to make it, though.
3: You can find patches of traps here and there, and try your hand at deactivating them to get the raw materials for the trap for yourself. If you don’t have high trapping, there’s a significant chance of hurting yourself, though. Alternatively, the least resource-intensive trap would be to make a stone shovel, make a bunch of wood spears and dig spike pits all around. Your best bet is to get a good weapon and chase after animals yourself, though. After a few days there’s no shortage of hostile wolves/bears/moose throwing themselves at you, so if you can reliably kill those there’s no need to go after the skittish ones.
And to answer the question about vehicles in the other thread, I presumed those were vehicles that ran out of gas and were subsequently abandoned on the streets. I mean, no reason to abandon one in perfect condition. Alternatively it’s a gameplay conceit.
