Self-initiative and learning platforms

In these times where self-initiative, the will to learn new skills, and ingenuity are even more crucial, the digital world offers many so-called learning platforms where cutting-edge knowledge is just a few mice clicks away.
Do you use any of the ones listed in the link?

https://www.popularmechanics.com/…/best-online-learning-pl…/

Fun Fact: Opa!cells occasionally “multiply” on the Udemy platform!