I wish it was easy and relaxing .... but jeez, other than theory ... doesn't seem like a lot translates between and engine with 2 cylinders and 57mm bores and one with 8 cylinders and 4" bores
I too started with a Briggs & Stratton on a test stand when I was 12 years old. Still miss that engine ... I'd start it up, and run it just to hear it run
Had a home made header, velocity stack, "big bore" carb etc. ... I had not idea what I was doing, but it sure sounded cool.