Speak with Demyan.

Unlocks at Player Level: 10.
Unlocks the ability to Imprint or Extract Aspects to your equipment.

Speak with Veroka.
Unlocks at Player Level: 10.

Speak with Zivek.
Unlocks at Player Level: 10.

Examine the waypoint in Kyovashad.

This is the unique Necromancer quest for Diablo IV. It becomes available after players reach level 25. Complete it to unlock a special skill.

• Objective 1: Pray at the Shrine of Rathma
  Interact with the shrine at the waypoint marker.

• Objective 2: Collect Unbroken Bone - 0/12
  Kill the skeleton enemies in the area and they should drop the Unbroken Bone items.

• Objective 3: Find the cave containing the vile artifact
  The cave in question is actually The Bitter Cave mini dungeon and it can be found in The Sallow Riverbanks area of Fractured Peaks.

• Objective 4: Enter the Bitter Cave
  After you’ve found the cave entrance, go inside to explore.

• Objective 5: Open the Jar of Souls
  Once inside the cave, head southeast and interact with the Jar of Souls on the pedestal.

• Objective 6: Fill the Jar of Souls
  You will be knocked back and then enemies will spawn. Keep defeating them to fill the jar. Eventually, the Elite Phantasmal Tyrant will spawn. They are a Banshee-type enemy and can come with a couple of nasty modifiers. Make sure to distract it with your skeletons and mages.

Once you have defeated the Elite, you will complete the quest and learn the ability to summon a Golem.

Ossified Prayer Beads Rare Amulet

Jewelers can craft or unsocket gemns, add sockets to items, and upgrade jewlry.

Seek out Kratia in Kyovasahd and craft a gem.

Fractured Peaks