This forum can be used to introduce yourself or welcome someone who is new.
To Introduce yourself...all you need to do is select the button that says "New Topic". You will get a screen that enables you to fill in the subject and then a box where you can tell a little about yourself and anything else you think might be interesting. Hit the "send" button and your topic is now posted to the forum. It is likely that other members of the forum will notice your post and reply to you with a welcome. Stay alert if you want to meet new friends who reach out to reply.
To Welcome someone who is new...click on the introduction you want to reply to and then hit the button that says "Post Reply". Enter your welcoming text in the box and hit "send".