The OTHER Kevin in San Diego wrote:
I forgot to mention this when I posted my responses last night. Flash
Cards. They helped me tremendously. I picked up about a thousand 3x5
cards (Dunno what the metric equivalent is. grin) and started
writing questions on one side and the answers on the back.

I'd have my kids quiz me in the car, at dinner, wherever we were. My
10 year old learned almost as much as I did. heheh

I'm well into my 2nd stack of a thousand cards as I do my instrument
and commercial work...

This is a great way to memorize a lot of facts in a little bit of time.

A dry-erase board complements flash cards as a study tool.
Especially if you need to draw diagrams from memory, practice them on
the dry erase, compare to your text book and see what you got right
and wrong, and repeat as necessary.