Bitcoin payment tutorial for first-timers — need advice

Answering the narrow version, because the broad one does not have a single answer. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.

If somebody has the primary source to hand I would rather cite it than paraphrase it.

Dr.PeteFamMed said:

The version of this that has an answer is narrower than the version being asked.

Agreeing with Dr.PeteFamMed, and the qualification matters more than the agreement. Yes, and the corollary is less popular: if the reasoning holds, it also holds where it produces an answer we do not like.

MikeFit_NJ said:

I have used three payment routes and the only thing that changed with each was how much leverage I had when something went wrong.

Same experience, arrived at from the opposite direction. Nothing to add that would improve it.

Adding the clinical framing, because it changes how the question reads. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.