1)  Go to the LiveJournal website and fill out the form to create a user ID.  

2)  Go to the LiveJournal login page and log in.

3)  Go to this page and under the heading "Community Information" the first sentence has a link to join the community.

4)  This is a moderated community, so your membership must be approved.  In most cases I expect this to take less than 24 hours.

5)  Go to the Markoma Community and join the fun!.  All members can post to the site and see who the other members of the community are.

6)  Thanks for joining!