Brian, I’ve used this guy’s YouTube lectures personally to help me out in some of my classes. He’s quite knowledgeable (not merely a know-it-all), and, more than that, he seems to have a knack for zeroing in on the areas with which students experience problems. He has a gift for teaching even though he wasn’t trained or educated to do so (as far as I know).
He’s been around for a few years now, and his lecture material has expanded to cover a very wide variety of topics. Like all material available on the internet, you have to be judicious when choosing sources of information. But, so far, he’s proven to be a sound source for my purposes.
