[_nullandnull_]

I disagree about the trainer unless the user is a novice or is okay spending a lot of money on a trainer. In my experience all personal trainers are not created equal. The chapter on doing squats in Starting Strength is 80 pages long. Odds are it would cost you a couple of hundred dollars and many session to get that much information from a good trainer. Reading the book, watching the DVD and working with light weights to focus on correct form would be a better approach that hiring a trainer. After those steps are done it would be useful to hire a trainer to check your form and give you tips.