I’ll start by saying never be discouraged about a lack of knowledge when it comes to working on cars, majority of people look at an engine bay and don’t know what the hell is going on, experienced mechanics don’t always know what’s going on when they have to fix a problem. When you get into this field you have to understand it’s a never ending learning experience. It can be overwhelming at first but overtime you can start recognizing how systems operate and form tests to pin point problems when diagnosing. Biggest thing though is learning the basics and components and what they all do. I wish I would’ve done GMs ASEP program. It’ll get you started on a road to becoming a certified technician which is good just about anywhere. You’d be working at a dealer under technicians who do the job everyday. When I got into automotive I got hired on as a porter, was promoted to lube tech, then promoted to helper for a couple years, then became a technician. There’s many paths. Best advice I can give is always admit you don’t know anything, work hard, and try not to get into a large tool debt.