Hi and welcome to YT and congrats on Lillie.
Puppies are exactly like any other baby - they're born not knowing things; they have to be taught, just like any other animal. They don't potty train themselves or anything...that's all up to you and, yup, it is a lot of work, dedication, and commitment.
It sounds like you didn't really research owning a puppy or prepare for its arrival, so I'd recommend you read everything in this thread:
http://www.yorkietalk.com/forums/gen...ent-guide.html
Keep in mind you probably will need to tether her to you for potty training, as outlined in the training in those links. Also, you need to confine her to very, very small areas....we used an Iris pen for that, worked great. I don't really believe in crate training as all 4 of mine hate the crate so much.