To edit a drop-down list in Excel, you can use a number of tools depending on how you created the list. Here's what you need ...

Product IDs, serial numbers and other reference numbers require a unique identifier to avoid confusion when referencing a product or specific data point. Although you can manually enter unique numbers ...

This is my simple way to use the VLOOKUP function in Excel to find data fast. I walk through how I use VLOOKUP to look up ...

There are a few ways to count the number of items in an Excel list, depending on the data you have. In this tutorial, learn how to count items in Excel using the COUNTIF and SUBTOTAL functions.