In this video, you can learn about the ‘E3D Titan’ style extruder. The parts list, the assembly process in detail.

You can see full instructions in the link below.
https://www.instructables.com/id/Buil...

0:00 Intro
0:07 Step 1. Parts List
1:26 Step 2. Bowden Adaptor and Collet Clip
2:23 Step 3. Attaching the Pinion Gear to Motor
2:59 Step 4. Placing the Parts
4:43 Step 5. Assemble Extruder Lid
6:17 Step 6. Attaching Extruder to Frame
7:16 Step 7. Test Extruding