If you've encountered a CSV file and you're unsure what they're for, the good news is they're pretty straightforward and easy-to-use with apps you already know.

Merge multiple CSV files into one Excel workbook To merge multiple CSV files into one Excel sheet, follow these steps: Create a new folder and paste all the CSV files into that. Open the folder.

CSV files are special text files that are quite common when dealing with spreadsheets. Here's how to open and make them.