Recently while job hunting I realized i could use the free time to brush up on my drawing and digital painting skills, but not having the budget to actually buy all the professional courses to do it in a speedy-er manner, I stumbled on this website that seems to gather a lot of valuable courses from well known proffesionals.
https://online-courses.club/I of course advise to buy the original ones for those that have the money to do so and support the creators, but until then, this is a free alternative to help whomever is interested.