Hi!
Welcome!
It can get overwhelming, but try to keep a positive attitude. Being aware and educated is one of the best defense against serious problems. Enjoy your baby, know what to watch for, take action if something comes up, but mostly just really love and enjoy your puppy.
You know how you hear first time parents say, oh our baby won't really change our lifestyle. And those with kids just smile and say, a-hmmm. Well it's really the same with a Yorkie. You are going to be amazed at how your life is going to change, for the better!! I'm getting giddy just thinking about all the fun you are going to have.
Please post pictures when you can, and let us know all about him/her.