Hello, 18.104.22.168, and welcome to the Stargate Wiki! I've noticed that you've already made some contributions to the Talk:Stargate: Atlantis page -- thank you! We all hope that you'll enjoy our activities here and decide to join our community.
If you'd like to learn more about working with the nuts and bolts of this wiki, I have a few links that you might want to check out:
How to edit a page includes a basic tutorial about how to use our special wikitext code here on Stargate Wiki.
Manual of Style includes some basic Stargate Wiki formatting do's and don't's.
Stargate universe includes an overview of the entire Stargate franchise to help in you include factual information and become more acquainted with the shows.
Article templates for some pages that might help you in producing a great looking article.
One other suggestion: If you're going to make comments on talk pages or make other sorts of comments, please be sure to sign them with four tildes (~~~~) to paste in your user name and the date/time of the comment.