Congratulations! She's adorable.
We have a 10 year old female shih tzu. They are a wonderful breed.
We did weekly obedience lessons with her for her first year, as both she and I loved it. Using clicker training, she learned at a very fast rate. Now, her willingness to obey commands is sort of dependent on her mood
We kept her crated during the day (with a walk at lunch) until she was about 2 years old. This kept her safe and prevented accidents while we were away. For her first year I also found I had to take her for several walks a day to drain her energy, as well as a trip to the park to play fetch.