Experience Summary
Over the years I've learned that there isn't much excel can't do. Like most people I had a basic understanding of the basic functions to automatically do calculations in cells etc. My first exposure to excels more advanced features was for an accounting project. I learned to use excel and its macro recorder to automatically maintain account balances based on user inputs. Since then I've learned and used (extensively) Visual Basic for Applications, the macro programming language for excel. I can teach not only the front end features of excel: cell formatting, functions (v/hlookup, Logic, stats, math, environment, text), conditional formatting, data visualization, printing, IN ADDITION to the syntax of VBA and how to implement that into a workbook with buttons/drop down menus/ radial buttons/message boxes etc. I've designed dozens of Excel/VBA projects over the years including: accounting software, invoice/document generations, databases and even games like blackjack.
Teaching Style
Learn fundamental skills through simple examples. Apply fundamental skills to complete more complex examples that are directly transferable to real life applications. If you learn the basics properly and actually understand them, the more complex stuff does't seem difficult at all.