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Whenever you create a new workbook in Excel, you'll need to know how to save it in order to access and edit it later. As with previous versions of Excel, you can save files locally to your computer. But unlike older versions, Excel 2013 also lets you save a workbook to the cloud using OneDrive. You can also export and share workbooks with others directly from Excel. Sometimes you may want to analyze and view trends in your data without creating an entire chart. Sparklines are miniature charts that fit into a single cell. Because they're so compact, it's easy to include several sparklines in a workbook. Before sharing a workbook, you'll want to make sure it doesn't include any spelling errors or information you want to keep private. Fortunately, Excel includes several tools to help finalize and protect your workbook, including Spell Check and the Document Inspector. Every Excel spreadsheet contains rows and columns. Most of the time, columns are identified by letters (A, B, C), and rows are identified by numbers (1, 2, 3). In Excel, this is known as the A1 reference style. However, some prefer to use a different method where columns are also identified by numbers. This is known as the R1C1 reference style.