Place your arms directly out in front of you to give you balance
Slowly lower yourself as if you were sitting on a seat
Ideally lower yourself until the top of your thighs are parallel to the floor, if you can't go that low, go as far as possible and over time keep going slightly lower
Now slowly return to the starting position
Repeat steps 3, 4 and 5 until you can no longer maintain correct technique
Tips
DON'T lean forward as you go down into the squat, try to keep your back as upright as possible at all times
Be careful not to let your knees go beyond your toes
To protect your back it is very important to use correct technique