At the top of the page there is magnifying glass icon. Clicking on this icon will open up the Global Search Bar.
As soon as you start to write the bar will search CC for you. Here you can look for answers to common questions, you can look for other members, stories, forum posts and even glossary entries and stories by genre.
Try entering your own username or your favorite genre and see what happens. You can also just ask it questions like How to earn credits? or writing crits.