I bought TURBO TAX Home & Business downloadable cd and i am not sure where to enter my rideshare income.

You can enter your ride share income in the following steps in TurboTax Home & Business:

1. Select the Business tab at the top of the screen.
2. Press Continue and then "I'll Choose What I work on"
3. Then select to start Business Income (Schedule C, Form 1099 MISC)
4. From there you will be asked to answer questions about your business and then will be brought to a Business Summary Screen.  Scroll down and select to start Business Income. 
   
5. Then select the General Income option and enter your Ride Share income there.  See the sample screenshot below.
   

Once done entering income, you can select to enter Business Expenses for your Ride Share business.