This post explains what is a Steam Friend Code and further explains how PC gamers can find and use Steam Friend Codes.

On Steam window, select the Friends tab on the upper left. Once you’re in the Friends window, click the Add a friend icon. Click on the COPY button to copy your own Friend Code.

Steam is the ultimate PC marketplace for gamers, but there are still times when you will need to redeem a code. If you've never done it before, here's how.