If you are looking for general knowledge. I highly recommend looking at Engineering Explained on Youtube. Especially some of his videos from a few years ago. He has a wide range of videos that go over a lot of upgrades people to do to their cars today. He goes over pros, cons, and why. I've definitely picked up a lot of good general information on cars from him. His video on various suspension upgrades are really good too.
Here's a specific one for V6:
One on sway bars: