You have it correct, except, he offers a Megasquirt specific class along with some EFI basics. He does training on a plethora of other ECUs. You can pay by the month or by the “class” which is just a series of videos you would own. I have done both HPA and Evans and found that Evans had a more professional and put together videos.I've never done it but, I believe its the Evans performance academy subscription. I don't know which ECU you have but, last I heard there wasn't much megasquirt specific (which is what the stinger ECU uses) but others have said that they information provided helps with basics regardless of the ECU.