The Citizendium, like virtually all wikis, could have an "Under Construction" sign on every page. Wikis are not conducive to instant perfection; high quality is achieved gradually, over time and usually after quite a bit of interaction with others.
So what does that mean? It means: go ahead, add something. It doesn't have to be perfect.
This means that we will tolerate what are called "stub entries" or just "stubs." These are short entries, say between 50 and 250 words. (Don't bother with anything shorter than that.) But if you're motivated to do much work, please focus on just a few articles rather than making dozens of small ones.