3 excellent websites

[Gear Jerker]

2 Met Websites

https://www.meted.ucar.edu/
http://www.theweatherprediction.com/

And, the brilliant

www.skybrary.aero

[dr.aero]

Brilliant websites! The weather prediction site is fantastic - the guy really knows what he's talking about and is straight to the point with it.

I'll contribute a couple.

http://aerosafety.ca/ - This guy's work is really good. I recommend reading the Aircraft Icing presentation and paper, and the Summer Severe Weather presentation.

https://www.faasafety.gov/gslac/ALC/course_catalog.aspx - A lot of FAA courses that are on a variety of topics.

[Cessna driver]

How does a magneto work?

Great animation here!

http://media.avit.und.edu/f7_Virtual%20 ... Engine.php

[Colonel Sanders]

I never understood radial engines until I saw this: