I know this thread is a bazillion years old, but who doesn't like a zombie thread.
I don't think squatting deeper will help you lose more weight. You will probably gain weight in muscle. It's annoying to see the scale not move, then you notice your buns in a mirror and you don't mind as much.
Anywho, I am a HUGE fan of deep squatting. Like ***2grass squat (I don't crossfit) I agree and disagree with the first article. #1 shoes - yes. Get weightlifting shoes if you can. I have a pair that is white with black stripes called.. Ashley? IDK, they were gifts, but I love them, it's night and day. If you don't have keds or converse squat in socks. I wear converse daily and I once tried to squat in my running shoes and thought I was going to die. Don't squat in sneakers.
#2 your stance, I agree and disagree. Everyone has a different stance. Try out some. I have a wide stance with toes slightly out. You can't squat too wide. it will just be a sumo. If you were to squat down and poo how would you do it? That's your stance. You will get mixed opinion on squatting on 2.5 weight plates. I say do it. Just remember to drive your heels into the ground, don't let your weight go to your toes.
I will half disagree with "use a barbell" barbells weigh 45 pounds. That's a lot. Start with goblet squats when you are ready for weight. When you are ready for 45 extra pounds, absolutely a barbell. Stay off the smith machine.
Everyone should squat, and squat deep
it's helped my hips not get pissy when running too. I have great mobility from working on deeper squats. I used to not get to 90 degrees. Also, my spine is wonky and I have noticed a huge difference in my posture and pain from my disk.