I need to join a group

I would like to be in a group but I can't figure out how. Some of my friends are in heartbreakers. I am not sure if I am doing this the right way or not, and then I am not even sure if I will know if i got any responses to this post. I have been on this site for 1 year and I have only gained weight and I would like to see my ticker go the other way now, and those that are in groups have success and those that are not in groups don't seem to have such successes. Please help.