Hi there -
If you post a question in a community, you should see a box under the question box that says, "Join this Community", and it should be checked as default.
If you don't have a question to ask, and want to join, you will have to find a member of that community, and go to their profile, and click Join next to the community in their Communities list.
Emily
ahhh ha got ya Emily thanks!
look like somebody added me to the one I was looking its in my drop box now! Was that you Emily?
Nope, I didn't do that. I didn't know what community you were trying to join.
Did you ask a question in that community?
Em
yes i did but it didnt show up in my drop box until after i posted here..