Clicking on the Favorite Titles combo will drop down a list of your favorite titles.
Once you have selected a title from the list, click Apply to make that title active. It will now show up in your Buffs window.
You can click on the Title Info button to see the full list of titles you have earned. Titles listed in orange are favorites and titles in white are not. Select a title to see the list off buffs it provides and the time they will apply for.
Click the Set Favorite Titles button at the bottom to toggle the selected title's favorite status on and off.
This lists cool downs (CDs) on any dungeons. Most dungeons have limitations on how often they can be accessed, in the forms of cool downs, or time periods that you have to wait before you can enter a dungeon after having entered it last. See the dungeons page and the pages for individual dungeons for details.
The DOB tab shows the date of birth of your character, the Real Time (not Atlantica Time) date on which your created this character. Every year on your character's birthday, you can collect a birthday reward.