Did day one today. Still need a lot of practice on the squats. I felt alot of pain at the point of contact with the bar and my neck - what can I do to remedy this? are these any good?: http://www.mysupplementstore.com/manraylegsqu.html

also, I want to be sure not to stunt my growth, which my dad claims squats will do. is this something I need to worry about?

and is whey protein my best bet?

thanks!