warming up and using proper form are the best ways i think.
Look up starting strength.com and see how mark ripptoe coaches the squat.
The best way to get good at an exercise is doing it very often. Especially squats i have always been one of the squat-atic guys who thinks its the best exercise on the planet earth for pretty much everything...
The only thing i ever did other than squat and deadlifts for my hips and thighs, were monster walks with a band (haha don't trip yourself!). then again, that just for some exterior hip strength (found to be helpful for runs and obstacle courses) and even then, only maybe two or three times a week for like two weeks before an event was ALWAYS more than enough for me.
Behold, I say unto you, many are called, but few are chosen.....