To add the torus object to the project, take the following steps:
- Since you are adding a brand new object, make sure you are in Object Mode.
- Left-click your screen to move the 3D Cursor to where you would like to add the torus:

Moving the 3D Cursor.
- In the Tool Shelf on the left side of the screen, click the Create tab. Left-click the Torus button. A new torus appears on your screen. In addition, a new Add Torus section appears at the bottom of the Tool Shelf to allow for further customization:
Adding a new torus ...