This is really basic, but we have a moral obligation to briefly mention it anyway. You can start Excel 2010 in two principal ways:
In Windows, click Start, Microsoft Excel 2010 (or click All Programs, Microsoft Office, Microsoft Excel 2010).
In Windows Explorer, double-click any Excel 2010 file or shortcut.
When you start Excel for the first time, you are asked to register, or activate, the program. The easiest way to do this is by letting Excel register online, assuming your computer is connected to the Internet. (You’re going to want that—we’ll talk later.) Online registration is fast and painless and a lot easier than taking a postcard to the mailbox. It is also highly recommended. Alternatively, ...