I remember this question was actually helpful, but search results are a bit outdated, it would be nice to have some new responses.
I remember this question was actually helpful, but search results are a bit outdated, it would be nice to have some new responses.
free but you can pay for certs for a bunch of them too: https://ocw.mit.edu/ https://www.businessinsider.com/guides/learning/free-mit-online-computer-science-classes
Depends on your area if it’s free but you can never go wrong with CPR/First Aid
I don’t think anyone has ever regretted having CPR training.
It might not be the most important thing to have on your CV, but you never know when you’ll need it and if you ever do it’ll be the most valuable thing in the world.