If you're having trouble figuring out how to get started DIYing and making your own stuff, Cory Doctorow has this piece of advice: "The gateway drug for making is breaking. That is to say that every act of making begins as an act of unmaking."
Doctorow's point is that we often learn best by breaking what we own and taking things apart. It's not a new idea, but it's a nice reminder if you're stuck trying to figure out what to make. Doctorow's entire keynote presentation from the Mini Maker Faire embedded above is well worth a watch for more tidbits.