The Most Basic: WHAT IS EXCEL?
You may think asking the question "WHAT IS EXCEL?" is pretty stupid. But think again. Even those who have been using this Microsoft spreadsheet application and acquired a doctorate degree in dealing with excel formula and functions, pivot tables and VBA (Visual Basic for Application) aka macro can't give a brief yet concise description of EXCEL. I'm not generalizing but most just really can't!
Question: What is Excel? It is a full-featured commercial spreadsheet application for Windows and the Macintosh written and distributed by Microsoft. The features include but not limited to calculation (using formulas), graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications. (got that from excel.i.ph and the video below too...)