Hi, I sent you a message via PM. For you to access you mailbox: Check out the "envelope" looking icon in the upper right hand corner .. you should be fine from there.
In order to send messages/PM - click on the name of the individual you wish to send a message to (you can also "right click" on the name, so that their profile opens in a different tab). Check out the left-hand side and click on the "send message" blue button. Voila!