What is IK/FK
Production Rig Basics Tutorial
animation - What are the advantages of separating FK and deform
How can you set up an IK Controller on your 3D model?
Control Rig Example : IK/FK Manipulation on Vimeo
IK, FK for Actors or Extend Bones
ArtStation - IK/FK switch
GitHub - peanuthu/Maya-Arm-IK-FK-Setup-in-Python: The following
IK, FK for Non-Human Actor