FABRIK (Inverse kinematics):
https://www.youtube.com/watch?v=UNoX65PRehA
Coding Challenge #64.2: Inverse Kinematics:
https://www.youtube.com/watch?v=hbgDqyy8bIw
Forward And Backward Reaching Inverse Kinematics (FABRIK):
https://www.youtube.com/watch?v=tN6RQ4yrNPU
http://www.andreasaristidou.com/FABRIK.html
C# Inverse Kinematics in Unity 🎓
https://www.youtube.com/watch?v=qqOAzn05fvk
https://github.com/ditzel/SimpleIK
https://assetstore.unity.com/packages/tools/animation/fast-ik-139972
https://www.youtube.com/watch?v=SHplmEc6iv0
IK Rig: Procedural Pose Animation:
https://www.youtube.com/watch?v=KLjTU0yKS00
REALISTIC Foot Placement Using IK in Unity:
https://www.youtube.com/watch?v=rGB1ipH6DrM
Build a Foot IK System from Scratch for Unity (C#)
https://www.youtube.com/watch?v=MonxKdgxi2w
https://github.com/Tannz0rz/FABRIK
Unite Berlin 2018 - An Introduction to CCD IK and How to use it:
https://www.youtube.com/watch?v=MA1nT9RAF3k
nucl.ai Conference: Ubisoft Toronto “IK Rig” Prototype:
https://www.youtube.com/watch?v=V4TQSeUpH3Q