@leothejediartist that 3 hour video is just number one of 37!! Lol. But if you are serious about it then it should really excite you because trust me, finding people that go into that much detail and depth for free is hard to find.
You don't have to sit there and just watch, if you follow along with your sketch book (which I would encourage) or photoshop or whatever you feel comfortable with then you will gain tons of "mileage" which most artists say is just as important as knowing the technique. It's getting that muscle memory and that flow through your arm to make confident strokes in whichever medium you try.
And that goes for any resource you find, you can't just read or watch it, you have to put in the work with it.