The Force Awakens

Holocrons

The Force Awakens has its own set of 15 Holocrons for you to find, each of which unlock a piece of general Star Wars Concept Art. Finally you can have a complete gallery.

Several of them are locked behind doors that can only be opened with a lightsaber, none of the three native characters can do that so you'll have to find a Champion Coin for a lightsaber user that you have to open them first.

Jakku

Four of the holocrons can be found on Jakku's surface.

Star Wars Concept #29

Through a lightsaber door just before you have to smash a blockage in the "Sand Trap" mission.

Star Wars Concept #30

Shoot a target next to where you first see the town.

Star Wars Concept #26

A force door near Rey's AT-AT.

Star Wars Concept #25

A lightsaber door beneath the Salvage House. Near where you find Yoda's coin.

Space Above Jakku

Two can be found on the moon.

Star Wars Concept #17

On the surface of the moon, sitting on a rock next to where the blue pipe that goes through the deep gap crosses with a yellow pipe.

Star Wars Concept #24

On the surface of the moon, sitting on a rock next to a tall strut holding up a yellow pipe.

Takodana

Another four are on Takodana's surface.

Star Wars Concept #22

Through a lightsaber door along the path to the right from the landing bay.

Star Wars Concept #28

On the rock directly in front of the castle.

Star Wars Concept #23

On the island on the far side of the lake.

Star Wars Concept #20

On a section jutting out over the water to the left of the castle, repair a ledge to reach.

Space Above Takodana

Yep, there's two on the moon.

Star Wars Concept #16

On a platform with a bounce pad, north west of the starting area.

Star Wars Concept #21

On a platform with oval holes in, south of the launch pads.

Starkiller Base

Replay the mission "Shield Shock" to be able to access these final three.

Star Wars Concept #27

Through a lightsaber door at the bottom of the elevator shaft section.

Star Wars Concept #18

Through a lightsaber door halfway up the elevator shaft section. Shoot two targets to extend a bridge.

Star Wars Concept #19

Through a lightsaber door at the top of the elevator shaft section.

For finding all 15 of the holocrons you earn the feat "History Lessons" and unlock "ME-8D9" for use as a Townsperson in your Toy Boxes.