Follow a step-by-step Excel tutorial to learn how to calculate percentages correctly and avoid common spreadsheet mistakes.

For years, I solved complex spreadsheet problems the same way: adding helper columns, stacking increasingly nested formulas, and, when things became especially tangled, resorting to Excel’s VBA macros ...

Have you ever been overwhelmed by messy spreadsheets or struggled to collect data in an organized way? Imagine a scenario where instead of juggling multiple tabs and rows, you could guide users ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Amy is an ACA and the CEO and founder of OnPoint ...