The left side of the quest list is separated into four sections based on quest status. Click on a status to expand that list like an accordion menu. Then, click a quest name in the left list to populate the Quest Details panel on the right.
The top section of the details pane displays the title, quest giver, quest area, creation date / time, and updated date / time. Quest description and notes follows this section.
The box below, labeled Quest Ancestry, contains a list of nested and/or parent quests. This gives you a quick view of the entire quest chain. See Quest Ancestry for more information.
If you are a GM, you will see the last section labeled Game Master Secrets, where you can keep additional notes regarding the quest that your players should not know yet.