I have an old jack stand that's about 30-35 yars old. It's pretty much useless but I keep it both as a reminder and a lesson if I'm teaching a kid to work on cars. I was crawling under a '69 Chrysler with a bottle jack and the jack popped out and the car came down on the stand. It flattened the top of the stand. I use heavier stands now. If removing the wheel, I also slide the wheel that's removed under the frame so that if the stands do fail, and a lmb is under the car, it will stop short of crushing.
On bleeding brakes, Bleed the right rear first. Unless you're in England where they drive on the left instead of the correct side of the road. The right rear will bleed most of the system and then it's just a little for each of the others. Bleed until you get clean and clear fluid. DOT 3 and 4 fluid i hygroscopic and absorbes moisture from the air.