Torsion springs are under real tension, wound tight enough to do damage if the winding bars slip, and that risk doesn't change because a town is small or the job looks simple. We don't recommend doing this one yourself, and we're not going to pretend a video tutorial replaces the right tools.
What we will say honestly: if your door is original to a house built right around 1988, the spring is old enough that replacing it now, correctly sized, is usually the better call than patching whatever's left of the original wind. At a median household income of $62,575 for the area, most owners here are weighing a spring job against a full opener replacement - and for a door this age with everything else sound, the spring repair is almost always the right-sized fix, not the opener. We won't upsell a new system onto a door that's otherwise fine.