hello there.
my mother breed shelties and its so awesome to experience this! what kind of dog is she?
i dont know if you want to see a video, but see if you can find a utube on it.
i would def be sure you have spoken and have good communication with a 24 hour vet, incase this go differently.
I can recall needing a welping area, large cardboard box in a corner area of the house, warm blankets.
She will start panting as a sign there are labor pains happeneing.
As i recall witenssing the act of dog birth, she will bite open the sack (to wich the puppy will emerge) and out a baby will come, as natural instints will occure, she will clean the mess (blood etc.) up by eating .
Sorry may sound gross,,, but dont freak out, your dog will know if your nervous or upset. She might get upset. stay calm.
lastly be sure she is not alone when the days draw nearer.
And yes there are many dog owners/breeders here on byc that can lend you a hand.
Having said that, being prepared is a great start, and thats what your doing.
good luck to you and your dog,,,, its truly a wonderful thing to witness!!!