Yes, that's me at TGO.
The actual tuning is not that difficult and no, you don't need to know a lot about the actual programming of the ECM, especially with programs like TunerPro, where all of that hard work is done for you, you just need to understand how certain parameters relate to actual engine function, which becomes pretty easy to understand once you actually connect and see things happening. Using datalogging and just watching the data tracing (bubble) shift over tables will help you understand what cells are being used at what times and maybe even why.
The parts that Byron is selling are a great cheap way to get into tuning, at least non-real time tuning which is how many of us started. Datalog, make changes program an EEPROM install and repeat. If it were me I'd add an emulator, such as Moates' Ostrich 2.0 so you can make real time changes as the engine is running and see instantly what those changes do. Then when you're happy with the changes program an EEPROM and install until the next tuning session.
Yes the learn curve is steep, but thankfully not that long for the most part.
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