itsmecp, use your mouse to left click on the text of 'jclinganrey' (she is the member that posted at 2:45 pm, just before you did today). She has the black and white drawing of a antique sewing machine for her little picture (avatar). A window will appear with 'private message' in the list. Left click on the text 'private message' and a new window will appear for mailing a private message.
In the upper right corner of your screen you should see a horizontal menu, where after it says 'Welcome itsmecp' it says 'Notifications.' If you left click on 'Notifications' there should be a drop down menu that appears showing you that you got a message (if you didn't find it yet) because I sent you a private message giving you some help about what to do to sign up for this swap...