My recommendation is to go as slowly as possible with your first wheel build. Don't over tension the spokes after you have laced them and before you start truing. Just thread the nipples on enough to remove obvious slack, then true, round, dish...true, round, dish, etc etc...and after there is some tension on the drive side, start stress-relieving the spokes after each round. Go 3x on the rear, both sides for the strongest wheel. There is no reason to go with less...you don't save any noticeable weight, and strength is generally compromised.

Also, it is a lot easier to build a front wheel as your first wheel. When you do a rear wheel for the first time, you will notice the drive side spokes will be much tighter than the nondrive spokes as they come into tension, if you keep the wheel dished as you go. Tensioning the nondrive spokes will affect the dish more than when you tension the drive side spokes the same amount. Hard to explain but you will find out. You will usually have to add a quarter of a turn or more to the driveside spokes to keep the dishing correct as you build...

Also, ensure you have adequate tension. To prevent spoke wind up, a good spoke prep is linseed oil. It provides great lubrication during the build, then also provides the same effect as loctite once it dries a bit. I dip the spokes collectively in a little puddle of linseed oil in a paper cup, and let the excess come off by lying them on newspaper.

It's a practice in patience and attention. Good luck and have fun.