Pass the Town Square and go to the Inn
An owl will deliver new quests to you. If you happen to miss a quest, press 'Q' to see all quests that are in progress. Nora will teach you the 'Rest' skill, so it's important to find her. Nora will be in front of the Inn, which is located in the southern region of Tir Chonaill.

Learn the 'Rest' skill from Nora (NPC) at the Inn
Once you begin a conversation with Nora, your Traveler's Guide will open.
Talk to her using the keyword 'Skills'. You can also obtain other information by talking to NPCs using other keywords.