Worm composting: black gold/tea is what the bi-product is. Start with a few dozen or so red worms. Veggie waste, news paper shreds. Just follow the directions. My son and I did it for a while in a shoe box, but we forgot about it in the closet... but, I will do it again. It does not smell at all and you garden will love it.
Composting your leaves is the easiest way to get into composting. If you are lucky enough to have an Oak or a Maple in your yard, your well on way. Be patient, though. It may take a season or two to really see some nice black, decomposed leaves. Your plants will love them.
Composting is wonderful. May seem obvious, but do not compost or use pet poop (dog and cat). Listen, I know I'm not talking to you (of course) but people have done it and will become very ill. Plus, it's kind of weird.