I do a bit of magic (the performance art, not the card game) and attend lectures. Typically it's just a guy with no tech demoing new effects and methods. At the end they always sell lecture notes. It's a detailed overview of everything they did that night and it's usually indexed well so I can jump straight to a particular effect I want to learn.

I really enjoy this approach. It allows my to pay attention without worrying about remembering or note taking during the presentation and still allows me an almost perfect reference.