How To:
Top left is a button with 3 parallel horizontal lines on it, click it to go to another page showing a list of lists. Top right is an Edit option clicking it adds the option to "Create New List..." or edit the name of a list (the Completed list cannot be modified) once you have a list besides Completed, name it something (like To Do) and click done. Then click done again. Now you can slide horizontally to your new list, in your list you can add items by clicking the plus button on top right. Press return to confirm name. Click task for options, so you can delete, rename, set reminder, et cetera. Click the icon to the left of the name of the task to check it, adding it to Completed. (it also stays in your list)