In the Components tab, you'll find all of the available tools for adding content and functionality to your page. There are many available for use on UC websites, and the Components page on this site provides an overview on how to utilize many of them.
If you don't see a component you'd like to use, contact CQ Support to request permission.
The Page tab of the Sidekick will allow you to Activate and change information using Page Properties.
The left side of your Author mode interface has a panel called the Content Finder. Anything stores in DAM is accessible here, as well as other pages in CQ. There are six tabs: