GuildWiki:Tip of the day

Guild Hall travel
If you visit a Guild Hall, you can always return to your previous town or outpost by using the "Leave Guild Hall" button in the Guild window (G). For this to work, you must be in your own Guild Hall, and not another one in your Alliance. You can always switch Guild Halls as many times as you like before returning to your own, and then use the Leave button to return to your most recent PvE campaign location. This also works for group map travel, and will use the most recent location of the party leader. This is especially useful for returning to locations in the Domain Of Anguish, which normally takes 2-3 map travels otherwise.

Guild Hall Signet of Capture
If a Guild Hall you have access to (from your Guild, Alliance or simply brought to one by a friend) has a Skill Trainer, you can use it to buy Signets of Capture and certain core skills before any skill trainer or quest offers them.

Signet of Capture
Signet of Capture is useful not only for Elite skills, but also for other skills that may be available from an early-game boss long before a quest or trainer offers it otherwise. This is an alternative to Skill Tomes, especially if you have not yet unlocked the skill.