The Ribbon tabs
Home: Popular Excel options found on the Standard and Formatting Toolbars in Excel 2003.
Insert: Items associated with the Insert menu.
Page Layout: Items relating to how a Workbook is set up before any text is typed on the screen.
Formulas: Functions found Insert/Formulas menu.
Data: Database functions of Excel.
Review: Options for Proofing, Comments, Tracking Changes and Workbook protection.
View: Options for how you see Workbooks on the screen.
Add-ins: Converts Workbook to Flash Paper format.