Here is a demonstration of a barbell squat. It’s a great variation of a squat targeting the quads, hamstrings and glutes. The bar should be placed on the top of the shoulders or traps. Try not to place the bar on the neck. Make sure to keep the feet parallel, tuck in the abs and lower with control. Watch your breathing and stay true to your form. Never compromise form for weight. Start with just the bar for 15-20 repetitions and then gradually add weight. 

A variation to this exercise is to place dumbbells on your shoulders or keep the weights to your sides. 

Watch your form and have fun!

https://youtu.be/79KVmiQysEw