I’ll start by plugging Harvard’s free courses catalog as well as Udemy
Edit: Gonna add 2 more I remembered-
Blender - I wish I had more time to learn it, but I did start the infamous “Donut Tutorial” once!
Watch Cartoons Online - Lots of good older stuff!
In most eu countries the law requires businesses that give out food to also allow you to order free tap water. If youre in a city and dont want to spend money on a bottle of water, walk into mcdonalds and ask for free tap water. A lot of european countries also have strict laws about tap water so for example in france unless otherwise indicated with a warning, tap water is always potable.
Not true everywhere, actually never heard of it here (Germany and Austria).
But if you walk into a place and ask for a paper cup of tap water, a lot of workers are willing to give it to you, regardless of the laws.
Vienna has tap water straight from the mountains btw and it tastes amazing. Recommended.
Then there’s Germany where restaurants charge you 6€ for a jug of tap water.