Load a Workbook
To load a workbook, select the File tab, and click the Open button in the Common group or press CTRL+O.
In the invoked Open spreadsheet file dialog box, select the file you wish to open from your working directory.
The Spreadsheet supports the following file formats.
- Excel Workbook (*.xlsx)
- Excel Macro-Enabled Workbook (*.xlsm)
- Excel 97-2003 Workbook (*.xls)
- Tab-delimited Text File format (*.txt)
- Comma-separated Values File format (*.csv)