What resources can help me catch up on science education as an adult?

[DLM]

I'm a retired electronics tech who wishes I would have taken school more seriously when I was a kid. Just here to feed my mind and occasionally ask ridiculous questions.

 

[berkeman]

Welcome to PF.

When asking questions here, it's best to post links to the reading you've been doing so far to try to figure out the answers. That helps us to see what level you are at currently, and what issues you may have in pursuing the question.

Enjoy!