Patience, desire, and time to do the study and you will get there.You are correct. Started messing around with some old cb radios we had from over the years and got interested in electronics. Trying to find time to take an online course now but it’s hard with my work schedule and kids finishing up college. I read all I can on forums like this and watch a lot of Mikes Radio Repair on YouTube lol. Learned a lot from that and trial and error but nowhere near enough to truly be able to troubleshoot and repair equipment.