To enter self-employment income, follow these instructions:
1) Open your TurboTax return
2) On the left-hand side, click on Income; on income, click on self-employment
3) Click on self-employment intro; it will ask if you have self-employed income and/or expenses to report; click yes
4) Follow the instructions page by page; it will ask you to provide income and expense information, along with other information relating to your self-employment work.