It is only the first meeting that I found a bit difficult.  When you walk in you have no idea who is new and who has been before but you soon get to know.  There where 3 other new ones the night I started and this week when I went in one of the new ones was there so I asked her how she had done, she had lost 1 1/2 lbs which broke the ice and then that is it.....you are in.
 
The others that have been going for a few weeks or a little while are nice too.  All being there for the same reason helps.  You will be amazed at how quick you will start to have a conversation with someone that you have never met before.  Just like we all are in here really except face to face.  It will be fine!!