Online courses of universities are awesome - but as DP said: you have to work hard and diligently to get something out of it. Also many things require you to know the lingo associated with it or your just wasting your time.
Currently I'm still on the path of sharpening my mind and logical thinking skills and I have to say the last months have been torturous but during the last days I have been able to visualize things that I could not really manifest before and see fundamental concepts at work for prolonged durations of time.
I basically had lost all ability to efficiently learn and my mind felt like an oily sponge... terrible feeling as you're literally dead inside. I now do understand why people, especially the ones out of the loop, never make any more progress(be it mental or physical) and circulate around their former "glory" until the Grim Reaper frees them from their burden...
Bonus -> imagine them making their final hnnnnnnng face, their anus tightening due to pending hell's entry and the donut they just held in hand hitting the floor in slow motion... chocolate flakes and saturated fats everywhere
