I hadn’t built a wheel in a long time then chose to build some quite expensive lightweight road wheels, cue lots of paranoia and over-cautiousness.
Basically I do it like Joebristol, e.g. wind nipples on until spoke thread is *just* covered. Then I start applying quarter turns of tension with the spoke key. It takes a while this way when the tempation is to apply half turns to take up initial tension, but it means you can never introduce too much error in one go.
Point is, the spokes feel all over the place to begin with. Plucking them for even tension sounds terrible, some feel really tight at the nipple, others feel really loose. Persevere slowly and steadily though, paying attention to dish, vertical true and lateral true, and it all seems to come together.
When finished I took it too Edinburgh Bicycle to use their posh tension meter, most spokes were +/- 5% with a couple of outliers at +/- 10%. Nothing to be especially proud of, but it shows that if you’re just patient and careful, those initial odd tensions just sort of iron themselves out.