The Elder Scrolls V: Skyrim

Two-Handed Skill governs the use of large weapons such as greatswords, battle axes, and warhammers. Those trained in this skill deliver more lethal and powerful blows. To improve this skill, damage enemies with a two-handed weapon.

Bandits, Imperials versus Stormcloaks, The Scavenger, A Good Death, Hey You There! Take This!, Imperial Scout Patrol, Stormcloak Scout Patrol, Courier on the Run, College Application Denied, Thalmor and Captured Prisoner, Thalmor versus Stormcloaks, Thalmor versus You, M'aiq the Liar, Bounty Hunters versus You, Hidden Treasure Hunt, Bard at Rest, Bard Attacked

Inspect the central mural with Esbern to complete that quest and begin a new one.

pull two hidden levers that are affixed to the nearby walls to open the way forward.

If you're having trouble locating any of the witches' chambers, carefully inspect the hub chamber (where the first witch was), as some connecting tunnels can be hard to spot.

Bring the Unusual Gem to an appraiser of stolen goods; Bring the Unusual Gem to Vex in the Thieves Guild; Recover the Stones of Barenziah (24); Recover the Crown of Barenziah; Return to Vex

Return and speak to Delvin about cashing in your stolen goods for gold. The following table lists all available Larceny Targets and the quests they appear in: Queen Bee Statue - Loud and Clear - Goldenglow Estate second floor bedroom; Honningbrew Decanter - Dampened Spirits - Honningbrew Meadery Locked upstairs office belonging to Sabjorn; East Empire Shipping Map - Scoundrel's Folly - East Empire Trading Company Warehouse In the dock overseer's hut, northwest corner; Model Ship - Speaking with Silence - Snow Veil Sanctum Fallen from a pedestal, deep in the dungeon; Dwemer Puzzle Cube - Hard Answers - Calcelmo's Laboratory Aicantar; Bust of the Gray Fox - The Pursuit - Mercer's House Riften; Eye of the Falmer (Second Gem) - Blindsighted - Irkngthand Sanctuary Taken from Mercer Frey's corpse. Tip: Did you miss one of these trinkets? Then return to the location and snag it; all should still be there. Also look for sold Larceny Targets to appear as trophies on one of the bookcases behind Mercer's desk in the Cistern and for the bust of the Gray Fox on the desk.

Approach Camilla Valerius over at the Riverwood Trader once Side Quest: The Golden Claw ends.

Kill Grisvar with your bare hands or with a Shiv if you previously received one from him.