Since your parents have not experience in having a pet before, they have to be committed into raising puppy and doing all the things necessary like, daily walks, behaviour training, cleaning of mess, doctor's visits, etc..for a puppy to understand all necessary it takes around 6 months. This is as good as raising a human baby.
The second question around the breed, let me tell you, all the breeds are great, it depends upon the purpose you want to have a dog in your house, for example, if your parents needs companion, you might need a dog in which there is less to no protection instinct, for eg. Cocker, Labs, Goldens, etc..
If you need dog with protection ability can think of doberman, rotties, boxer, gsd, etc.
Also the size of the dog is important, since the bigger the size the more is expense around food, for eg. labs are vorrasious eaters, in short they will eat how much ever you will feed them and that will make your dog obese.
Hope I have given some points on what you can think and go with your breeds, on this site there are many bogus sellers, agents, etc, will be good to find reputed breeder and get your puppy. check dogsindia.com which has good list of breeders then this place.