get the first side of the tire centered in the middle of the rim and work it around, it should go on pretty easy by hand, maybe just a little pop over the very last bit with tire iron
then put the tube in and wrangle the nipple past the bead into the hole, leave it super loose but put the nut on the valve stem so it doesn't pop back in. stuff the tube around the wheel through the gap try to keep it from twisting
put just enough air in the tube to get it to settle, then drain the air back out so its flacid, you can pull the stem if you're in a hurry.
start on the far side of the tire from the stem and set the bead in the middle of the rim. work it around the edge by hand keeping as much of the bead as close to the center of the rim as possible. you should be able to get 2/3 of the way around just by hand, if it starts getting tight work the bead back to the center of the rim as much as possible.
this is the part that takes some finesse because if you don't keep the bead centered in the rim, it gets tight right away and you have to start fighting it.
the last 3rd you'll have to do with tire irons, i have those 'giant' ones on treats so its pretty easy.
working 1-1.5 inches at a time, pull the bead into the rim, and push it over the edge by hand. dont force it all the way up to the iron, just use the iron to stretch it out and push it over the edge by hand. if you do it this way its impossible to pop a tube.
the iron will be about 1.5" ahead of where your hand is pushing the bead over, and you'll work in 1-1.5" increments. the iron never rocks over the edge of the wheel so it can't ever pinch the tube.
i know people have done videos on this, but maybe that discription will make sense or help somehow. it took a couple tries to get it perfected but i don't ever pop tubes anymore.