As you use Microsoft Excel more and more, you'll find that the VLOOKUP function is a very popular tool for dealing with large Excel directories or databases. It allows the user to quickly find ...

If you’re working on your accounts and you need to convert all your overseas expenses into the currency you file your tax returns in, you need to know the exchange rate for the date of every expense.

Excel's basic formulas work fine for simple calculations, but they quickly become cumbersome when you're dealing with complex data analysis. You end up with nested functions that are hard to read, ...