Welcome to SC! What is a pm? A pm is a Private Message - so it is visible only to yourself and the person you send it to (unless they forward it). How do I send a pm? Click on the username of the person you want to pm. There are about 5 choices of what to do. Click on "Private Message" It will then take to to a page where you basically "email" the person. How do I know if someone has sent me a PM? At the top of your page right below the ad. You will see : (in the red area) Your username, "Notifications", "My Profile", "settings", "Log-out". Click on "Notifications. Options will come up - click on inbox / private messages (says one of the two things depending on whether you have a message or not). And now you are at your inbox! Hope this helps! Jasmine