Creating CSV Files for My Own Online Store

Hi I am new here with no experience in creating CSV file. I want to create an CSV file to able me to export it to my online store. I heard it was quick and easy to list all you merchandise on spreadsheet and create CSV file then upload it to my webpage. This seem tricky from my end. How does this map workout? I like how ebay turbo lister works, but I rather create my own. Will WorkPefect Office do this kind of job?