To create a new document, tap the (+) button in the top right corner of the file list.
You will be prompted to create either a new document or a new spreadsheet.
Choose Workbook. You will then be asked to enter a name for the new document.
You don't need to add a file extension. Office2 will do this for you automatically. Just enter a name. You can choose to show or hide file extensions from within the settings. A blank document will open in the document window. To start editing a document, press the keyboard button at the top right of the screen or tap somewhere within the document. The keyboard will appear allowing you to type into the document. When you have finished making changes, either close Office2 and your changes will be saved automatically, or press the Close button at the top left of the document window. Office2 will prompt you to save or discard your current chanages. Press the Save button to save your changes.