The majority of bitches will take to their puppies naturally, although some may wonder where they came from at first.
Make sure the puppies are out of their 'bags' when born and are breathing, rub them gently with a towel and they should start crying, at which point mum should start taking an interest and licking them clean.
I had a greyhound bitch who had to have a C section, she sadly killed several of her puppies the following day and we had to hand rear the rest, just putting them on to mum to feed and clean then taking them away, as she would growl at them once she had fed them.
Notify your vet when she is near her time in case you need to take her in if there are problems. I will try to find a couple of links to sites that will help with the details of whelping.