Bob Ross might be all about blurring lines, but game designers are all about vectors. This course will teach you about all those funky angles, and how to work with the Unity positioning system.
Unity Crash Course: Physics
Physics aren't just for pool sharks and Neil DeGrasse Tyson. It's also for video game engines. This course will teach you how to create game physics and test them out with a cube that you'll get to launch into a wall. You wouldn't believe how often this comes in handy.
Unity Crash Course: First-Person Controls