First of all it's rethread. Second of all just search it up on google. They have tons of helpful hints. Heres one: when rethreading you must have all of these; screws, bolts, screwdriver, and rim guard.
I have bought a kids bicycle from a thrift store and we have taken it all apart to paint it. Well we have painted it and are now having the worst time trying to get the spokes back on the rim. We keep doing every other whole but it still shakes. If you have any helpful hints I would appreciate it. thank you so much