The front squat is a beast of a move, and is also surprising easier on the lower joints than the traditional squat. it equally helps with balance, strength, and building endurance and flexibility. FRONT SQUATS FOR EVERYONE! woohoo!
leg day is your best friend :) Squat, squat, Squat, Squat :) and more squats :) Slow and controlled. Maintain proper form. Don't be afraid to ask a stranger to be a spotter. Most people in the weight room are happy to help. If you're too shy bring a friend or just lift lighter weights with more reps. Or use a smith machine. There are endless options ;)