Here's a video you'll find helpful when teaching a "sit" and "down."
http://www.youtube.com/user/kikopup?...97/7NHqAW66-gE
And on teaching your dog her name. If I'm alone and working with a single puppy, I would throw a treat a few feet away and let the puppy go get it. As soon as she/he has eaten it, I call her name...if she looks up or comes to me, I say "yes" (or click if using a clicker), toss another treat (always away from me as I want them to turn around to face me as I call their name again). If you have someone who can help, place yourselves 5-10 feet apart. Take turns calling her name and treat her when she arrives. Increase the distance between yourselves gradually until you can even play hide and seek.
http://www.youtube.com/user/kikopup?...16/KwPPIxC0J5s
Have you already chosen the training center you'll be taking her to?