I mostly use pen and paper, but I systematize it. The most important thing I've learned came from "Getting Things Done," which has the idea that you should sepa

I mostly use pen and paper, but I systematize it. The most important thing I've learned came from "Getting Things Done," which has the idea that you should separate capture (have some kind of inbox to drop ideas into quickly) and refinement. I recently borrowed a technique that somebody here mentioned. In any meeting, I track tasks, decisions (made or needing to be made), and information. Each of those three groups gets a different color sticky note. Then later, usually once a week, I sit down for a couple hours and figure out what to do with any of the ones still lying around. It's a good way to not lose track of anything and those three categories are pretty low overhead while also suggesting what you should do to move each one forward.