I’ll show you a hack to set a door plumb in an extremely un-plumb wall. Your door will stay where you leave it and your trim will look great.
Tools I recommend:
Miter saw: https://amzn.to/3TKV69c
Nail gun: https://amzn.to/3eNd6Bj
Brad nails: https://amzn.to/3CNcuDq
Air compressor: https://amzn.to/3Soa6ZP

   / @midageddad