Lisa, if you're going to be lifting any weights I seriously recommend a few supplements:

Glutamine (in powder form): You drop 1 tsp in your water bottle during your workout; and another in later in the day. It's odourless and with a litre of water you don't even notice it. It will help greatly with soreness (I was unable to walk down the stairs after my first lower body workout; within a day of adding Glutamine I felt better - now that I'm pushing it harder I'm rarely 'sore' but I do feel that I've worked out). Glutamine is an amino acid that carries nitrogen to the muscles; it prevents wasting and encourages growth. It also helps to bolster the immune system.

Vitamin C and E: two powerful antioxidants that neutralize cortisol which is produced when your body is under stress; take these after your workouts (400 i.u. of E and 1000mg of C)

My 2 cents.
Nat