Squats used to be a big part of my workout when I was doing it in HS so it appears that I was (mostly) doing it right! Feet and shoulders square, look up, keep your back straight, etc. Judging by the wussy-low amount of weight I lifted and the way my legs feel like I shot them with a shooty thing (and also the fact that it's my hamsters and gluteus that are feeling it, not my back at all and even my quads aren't so bad), I was probably pretty okay form-wise!!!! One thing I didn't really do was express full range of motion, but that was because a. I noticed when I was majorly fat that doing deep knee bends made me knees hurt pretty badly, and ii. as noted in the parenthetical my hamstrings and glutes were already feeling the BURNSAUCE from the slightly more than 90 degree angle I did manage to get down into.
So, yeah... probably have to include those...
I'll submit my own less-scholarly, fat-guy exercise... donut eat-ups dumbbell shoulder press. It's just way, way too easy to cheat with the military press IMO, and standing up while you lift dumbbells seems to isolate your delts and tris as much as you can isolate them in an exercise like this. I haven't been able to work them as hard as I'd like due to school but nevertheless I'm still not plateauing, so those are working pretty well.