To build on what others are saying, when you have a project, just learn what is dangerous and be careful when dealing with that. For example, power supplies, wi

To build on what others are saying, when you have a project, just learn what is dangerous and be careful when dealing with that. For example, power supplies, wiring with mains, high current or voltage for motors, or LIPOs. Once you identify those key areas you can figure out how to handle them in a safe way!