Actually, like jet engine repair, it's not all that hard, it just takes time to learn the technique.

Take your wheel to a bike shop that you trust, preferably on a slow day, and have their chief wrench show you how it's done. He (she?) can show you where to tighten in order to pull the rim true, and where to loosen, as well. The mechanic will employ a truing stand, which makes the job seem easy. He'll hopefully point out the danger of overcompensating on any one spoke... PING!... and might even pass on a few other secrets, in exchange for lunch.
(Or a tip. The standard bike mechanic tip, as of this past 01 January, is $20.)

You don't need a truing stand... which you'll use maybe twice in the course of your life, just your bike's frame, a spoke wrench, and patience.