I know this has been mentioned in previous links but think it deserves one of its own. I have just completed the Space Weather module and found it a great learning tool. A wide range of weather modules are available sign up is free and gives you access to the training modules a completion exam and certificate if you pass. A small sample of a wide range of what is available is shown in my to-do list below.
Link to MET Ed Home Page https://www.meted.ucar.edu/index.php