What keyboard shortcut keys selects cell A1

The keyboard shortcut that selects cell A1 in Microsoft Excel is "Ctrl + Home". When you press the "Ctrl" key and the "Home" key at the same time, the cursor will move to and select cell A1, which is the top-left corner cell in an Excel worksheet.

Extra: Keyboard shortcuts are a combination of keys that you press to execute certain functions or commands within a software program without using a mouse. Using keyboard shortcuts can help you work more efficiently and quickly. In Microsoft Excel, and several other spreadsheet applications, keyboard shortcuts can allow you to navigate around the spreadsheet, format cells, enter formulas, and perform various other operations with ease. It's important to note that keyboard shortcuts can vary between different operating systems (like Windows and macOS) and even between different software versions, so always check if there are any differences if you switch from one to another. For example, if you are using Excel on a Mac, the shortcut to get to cell A1 would typically be "Fn + Command + Left Arrow + Up Arrow" instead, as there may not be a direct equivalent to the "Home" key on a Mac keyboard.