To give another deviant a direct link to this FAQ answer, use the following code in your comment or forum post:
What are Groups and how do I make one?
With Groups, every deviant can make or join a group of deviants that are bonded by a common interest or passion.
Whether you want to start your own group, or simply join a group, Groups will surely enhance your deviantART experience. When you make a group, you get the perks that a manager of any organization would have: you establish the group's mission and lead its charge by recruiting an administrative class and setting member privileges. When you join a group, you build friends and better your art with deviants that hold the same interests and passions as you.
Make a group now by visiting makeagroup. Please note that just like usernames, there cannot be two accounts using the same name. Please check to ensure the name you are trying to use for your group isn't already taken by another user, or group, or chat room.