What do I do if my dog starts to have puppies?

Okay, So I'm only 15 and my parents are on a vacation for 4 days and our dog is pregnant and she is due anytime in the next two weeks. I'm alone for the next 4 days and I'm kinda nervous. We have a box of stuff like scales to weigh them and a suction thing that will clean out their nose and mouth and I know that if she doesn't take care of them that i have to rub them to stimulate them to breath. Does this all sound right? Our dog is suppose to chew the umbilical cord and do everything but I'm still nervous. Does anyone have any tips? Did i miss something? HELP PLEASE!