[bigdict]

Explain it to somebody else.

[mindcrime]

When I took my Instructor Methodology class to become a Firefighting Instructor, I recall the gentleman who ran the class exposing me to the quote (which I've come to embrace wholeheartedly) that goes "You don't really understand something until you've taught it to somebody else."

[wannabebarista]

Similar idea here. I take notes as if I'm explaining it to someone else or expecting someone else (or myself in a few years) to read it.