If you know how to boil water, you can make your own stock. I usually buy whole chickens for whatever chicken dishes I make. I portion the chicken out, and throw any chicken pieces including the bones I don't use in a pot and make stock out of it. Most people collect the pieces and make big pots of stock at a time. I make two types of stock. Plain stock that I use for asian dishes that only has an onion in it, or traditional chicken stock which has onions, carrots and celery. The best part is that for 4 or 10(organic chicken) bucks. You get about 4 pounds of meat, and enough stock to make a pot of soup.
BTW, if you want a easy soup to make, chicken noodle and vietnamese congee are the way to go. Boil a chicken with some vegetables, pull the chicken out, throw in rice or noodles, shred chicken and throw it back in. It makes enough for a 8 adult meals and takes only 1.5 hours to make and most of that time is letting water boil.
