It's been a couple years since I researched school's but this is what I did: I saw the penn foster and other's that took you from nothing to entry tech. I already had a degree in marine technology so already had all the electric theory (definately know your electric!), motor's, etc. so ended up taking uncle harry's course. I spent about 3 month's going through his program as well as working with a local company for a couple year's doing service calls on water heater's and pool and spa's before going out on my own. No need to take the couple year's just threw it out there so you know my background it did help me with troubleshooting skills as well as how a service business run's. Uncle Harry's is a decent course but when I took it it was out of date. A lot of good basic knowlege which let me know what direction I needed to learn more. After his course ended up on multiple forums constantly reading post's and researching what didn't make sense. This site is fantastic! Not only do the tech.'s talk you through thing's but the sharing of manual's is incredible. You can get through anything with the right manual and common sense. There are theory and education manuals as well as service. If I had it to do over again I think I would read all the education manuals on here, watch all the video's I could get ahold of, head down to local book store and see what they have, and finally poke my nose around the local appliance part's shop and talk to the folks there see what they've got and there thought's (may get lucky with a local class). I don't believe I would have ended up spending all the money on uncle harry's if I did this but he has a pretty good program that discusses all aspect's of the business and maybe he has updated his stuff...I wasn't all that impressed with it but it did get me started. Start reading and grab some free machines and tear em apart and never be afraid to say "
I don't know" and figure it out from there. Good Luck, it's a lot of fun, just have to be smart about how you go about it. Profit margin's are slim to start and takes a while to build a business unless you go work for someone else...no one was hiring where I am so went out on my own.