Jeanner, HI and welcome

You definitely need to get the book and read it cover to cover. A treadmill, your son's weight bench and some free weights are all you really need to get started. Your level of strength and history of lifting will determine the lightness of your weights. There's a thread in this forum by Teridoodle about weights that you should have a look at, also the sticky at the top "BFL with a LC slant" you should read through.

BFL can be done at home - you get a great workout and it is convenient, I love not having to leave my warm house at 5:30 am

If you have any more questions please ask away!
Nat