Is there a tour starting from hong kong to other places in china as I will be travelling from Sfo?

First of all, HK is an international metropolis with modern transportations to be easily accessed, and also English is widely used. It is quite convenient to find the way to your destinations. There's no need to have a guide and private car according to our experience. So there is no related HK tours.
But if you want to tour other cities, you can take some well-organized tour itineraries in this website as references. Or you can decide the cities or scenic areas that you want to go. Then you can contact TravelChinaGuide. They have professional teams and warm service. The contact information is traveltravelchinaguide.com or tourstravelchinaguide.com.