Lunges. Look up doing them right and you will get results.
Keep your back straight (don't lean forward).
Step out with one foot and touch your back knee lightly on the floor. (Keep your back straight, Tighten up the core to keep things neutral)
Your front foot should stay pointing forward or slightly to the inside.
The front shin should be perpendicular to the ground when your back knee is touching the ground.
Pull yourself forward with your forward leg and push off from the back leg to stand up.
Repeat with the other leg.
Done correctly, you can go a long way without adding any weight besides you bodyweight.
Bodyweight squats usually only work your quads. Try doing them 'box squat' style which means....
Put something to sit on behind you where when you are sitting on it, your quads are parallel or slightly below parallel.
Stand in front with a slightly wider then normal stance with toes pointing about 30 degrees out.
Sit BACK to sit down on the box. When you are sitting, your shins should be perpendicular to the ground.
To stand up - pull forward with your hanstrings/glutes to stand up. Don't move your feet from the original position. Pull forward with your legs and stand up. You will have to lean forward a little. Don't turn it into a lean forward so that you are using your quads to stand up. It should be a posterior muscle workout.
Check around for youtube videos.
Last edited by ColoradoSteve; 02-11-2011 at 01:42 PM.
Never, never, never quit! -- Winston Churchill