How does our community work?
First, it's a wiki. You can work on whatever topics you want, whenever you want.
The basic wiki role is author. (Editors make up a different category, but they are authors too.) So, what can authors do? Almost everything. Authors can start new articles, edit existing articles, talk things over on the talk page, and much else. Editors can do all that, too. Editors aren't distant overseers looking down from the Olympian heights. To edit, editors must work shoulder-to-shoulder with authors and other editors. So editors are authors too.
Editors, who are experts in their fields, do have two special functions that authors do not have, however. First, they may make decisions, where decisions need to be made, about how an article should read. (This does not mean that editors must approve every change an author makes, which they certainly don't do.) Second, they may approve specific versions of articles. If you're an editor, and you want to know how to get started as an editor, please see The Editor Role.
Work is bottom-up and self-directed. But, for a variety of reasons, we are also organized into subject workgroups. Workgroups are collections of editors and authors who are interested in a particular discipline. Each workgroup has its own homepage (example), category (example), and "recent changes" page (example), and more.
The Citizendium is an evolving online community--but it is more than just a collection of people working together on shared goals. As a community, we need to coordinate our work, our policies, and our rules. You can participate there, too, by suggesting ways that the Citizendium can grow and evolve through our proposals system.
Most importantly, we edit the Citizendium because we find joy and satisfaction in building and participating in a knowledge-sharing community.