You can introduce yourself at this thread:
http://www.smogon.com/forums/threads/introduce-yourself.3480294/.
Getting involved with The Smog depends on how knowledgeable you are in a certain area. You have writing skills, but can you weave that with another area of your expertise? Maybe you can creatively use that skill to write some entertainment or other featured articles if you're not really in the know of the metagame or battling strategy. Perhaps you want to do something related to arts and creation? You should check out the index (
http://www.smogon.com/smog/archive) to see what ideas have been used (usually anything about Issue 25ish+ is a recent but safe idea). We tend to stay away from storytelling however.
If you have an idea, feel free to post it in the Article Approval subforums. We'll try to lead you to a better path if it's a good idea or tell you to think of another idea if it's not what we're looking for.