As others have posted, your dog's age alone would make this a higher risk pregnancy. Add to that your lack of experience and the risks go up from there. You really do need to be in close consult with an experienced breeder and vet. I don't think you should be whelping this litter alone. Too many things could go wrong and you don't have the experience to recognize the signs of distress in either the Mom or pups.
This link may help you in recognizing problems during whelping. There is also a lot of other good info on the site.
Canine Reproduction Video and Book on Breeding and Whelping dogs by Debbie Jensen for dog breeders and Whelping trouble.