Places to learn basic mechanic skills when it comes to racing?


I want to be a racing driver, and one thing I will need to know is what every part of the car means/does. Specifically, Sprint cars, stock cars, and sports cars. Of course there are differences between these vehicles, but I’m sure plenty of it crosses over to a degree. In general though, I want to learn more about how cars work so I can work on them.

What I’m asking for then are some online resources, whether they be videos, blueprints, whatever that can teach you what each part of a car does and what adjusting or changing it will do. Books also work, but I’d prefer it would be online?
Nox VidMate