Instructions
Speak to Hithlim, located at the entrance of Esteldin in the northeast corner of North Downs.
Accept the quest to speak to Greylond Bottomley about the Mathom Society.
Travel to The Delving Fields, located on the west side of The Shire.
Speak to Greylond Bottomley, located outside of the front door of the Mathom Society. The "Odd Requests" quest is now complete, and Greylond assigns you your first Mathom Society quest, "Mathoms."