I am not sure how to pm individuals
click on the forum name of the member/user/poster at the side of the screen and it will bring up another screen, at the bottom of this screen it offers you 3 choices...
Send this member a personal message.
Show the last posts of this person.
Show general statistics for this member.
from there just click on send a message, write what you want to say and click send.
then when you first log on,at the top of the screen is a blue bar which amongst other things says home,help,search,profile etc and also says messages click on messages and you can check what you have sent in outbox and check for replys under the title inbox.