As a BSA (business systems analyst) especially if you have a technical orientation, you should know about files in Comma Separated Variable Format (CSV Format), and how Excel handles these files.
Use Notepad to create a file with the following data:
Letter,Item,Number,Date
A,apple,12,Feb 12
B,Betty,13,Feb 13
C,cat,14,Feb 14
D,dog,20
Save the data with the following file name (and extension): mydata.csv
Double-click on the file. It should open as an Excel spreadsheet.