Just build it, the experience is very rewarding, and you will likely make a mistake, so don’t stress it, just read the directions such as what Sheldon wrote, then check it. It’ll be obviouus if you mess up.
I’d suggest using an electric screw driver to do the intial nipple tightening, otherwise you’ll wear out your wrist.
The only tool that would be nice to have, and one I don’t “yet” own, is a spoke tensionometer. I have always used “tone” to check spoke tension, seems to work fine, so that’s why I haven’t puchased a tension checker.
I “made” my son build his wheel last year, he was 14yo, did fine, I did most of the trueing work, though he did some and I walked him through the fine tuning. It takes time to develop wheel building skills, the hardest part being trueing.
Use the uni frame/brakes for trueing, flip flop the wheel to get proper centering, keeping in mind that some frames are not quite square.
I use wet, non aerosol chain lube for spoke prep, works fine, lets the spokes move in the nipples, prevents them from seizing, doesn’t dry out.
Take your time, have a beer, put on some good music, then sit down on the floor and do it