Want to know how to join groups
 

Want to know how to join groups, thanks for all the anwers in posts.

<<what <i mean how to join groups in linuxquestions.org

If you are asking how to add a user to a group, you may find this link helpful: https://help.ubuntu.com/community/AddUsersHowto

You leave us guessing----do you mean:
user groups---eg a local Linux users group?
a social group, book club, etc.?
something like AA?

If--as guessed above--you're talking about groups on a Linux system, then note that users do not join groups----it's the other way around: groups are added to users.

If Google is not working for you, then here is a Linux "power tool"---in a terminal, enter "man -k group"