I use both the fold & stuff and rub out methods with flakes, depending on the moisture level of the flake and my mood. Fold & stuff requires a fairly dry tobacco, especially if you want to pack the bowl tight. Rubbing out works best on a flake that isn't too dry or you will end up with a lot of tobacco dust. Packed properly and tended carefully, a given amount of tobacco will burn a lot longer and cooler if folded rather than rubbed out. If I want an extra long smoke, I'll pack two folded flakes, one of top of the other, in a tall cob like a MM General. I can keep that baby burning for what seems like forever. When rubbing out, I simply roll it between the palms of my hand until I get the consistency I want. Never had a problem with that, even when the tobacco was very moist -- just let it dry out for a couple of minutes before putting it in the pipe. Using the rubbing technique, if the tobacco is moist enough, you can even rub out a flake to its individual threads and use the result to roll a cigarette.
Maybe it helps to have been a Boy Scout, but most of this is common sense and what isn't is readily acquired with a bit of experience and practice. Frankly, I think that a lot of pipe smokers, for whatever reason, like to make the hobby sound more complicated than it is. It isn't brain surgery. However you put the tobacco in the pipe and light it, as long as you don't pack it too tight and the pipe draws well, it will burn. If you have trouble keeping your pipe lit, pack is a little looser next time. If it burns too fast, pack it a little tighter. And don't be afraid to experiment. That's how you learn what works best and what you like best.