There is no single squat style that is exactly right for everyone. You will find that various powerlifters, coaches, and experts on weight training have their own philosophies and preferences in regard to the best way to squat. For this reason, you will notice variations in squat technique as you watch the videos provided. You may need to experiment with different squatting styles as you endeavor to find a squatting style that feels compatible with the way your body is designed. The technique that feels strongest and most comfortable to you is likely the one that you should start with.
Basic Squat Technique
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Upright Style of Squatting
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Wide Stance Squat
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Wide Stance Box Squats Westside Style
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Good Instruction For Any Style of Squatting