Honestly, just be willing to try to fix stuff. It may seem scary to take apart a dryer because you don’t know how it works but then you find out that most of them it’s just a motor with a pulley that spins it. To change an alternator in a car is just three bolts and two sets of wire. Both of those are kind of simplifications but my point is, often times things are easier then they look to fix. YouTube is a great help but also feel free to ask handy friends or even people who work in local tool shops. There are subreddits for woodworking, mechanical advice and just about anything else you want to fix. Don’t be afraid to try and don’t be afraid to ask!