Excel presents a new blank workbook each time you start the application. You can create another new workbook at any time, however. For example, when you save and close one workbook, you might want to begin a new one.
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Sample Workbooks
For more options, open the File menu and select New. Then, peruse the options in the New Workbook Task pane. Click the link of the type of new workbook or template you want to create.
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Understanding Default Filenames
The default filename for each new workbook (Book1, Book2, Book3, and so on) increases sequentially as you open new books. If you exit and restart Excel, the numbers begin at 1 again.