RedHatAcademy
This is more for university instructors and students. If you are at a university the professors should be able to become academic partners with RedHat Academy. This give them the ability to use the content in classes at no cost to students. That is a great deal as the content is good, although a bit of a promotion for RedHat at times, and the labs are good as well.
https://www.redhat.com/en/services/tr...
Keep on learning!