The My Lists page
After you log into your account, in the center of the screen you will see a line of tabs. The "My Lists" tab is the last tab on the right. Click on the My Lists tab.
Below, you see the My Lists screen. The screen is made up of two parts: the section where you can create a new list, and the section that shows you the lists you have already created. In the picture, no lists have been created yet and so the space under "My Existing Lists" is blank.