This site is the Chattanooga Local Wiki - you're using it right now!
Its pretty easy :) You can just head over to pages which should exist and edit away! You can write as much, or as little, as you feel comfortable doing.
From time to time, we hold Chawiki Happy Hour events to get together and edit Chawiki in person.
There are some ongoing Wiki Projects which people are undertaking.
We've also got our Community Guidelines which you should follow to ensure everyone has a welcoming, safe, and fun time here.
Help - quick start guide for creating and editing pages
Community Guidelines - a few ground rules for posting/editing content
Templates are used to create lots of pages with a similar structure, like restaurant listings
Project Team and Contact Info - see ChaWiki Organizers