Character Tools, Kinematic etc

Hello, is there a tutorial, a video, or… something better than this
“help” page…

regarding Character Tools, Bones, IK etc.?

It’s so frustrating that in TD things that are straightforward in popular 3D authoring apps are so difficult
to learn, just because of total lack of documentation.
You need to spend DAYS watching sloooooow videos made by users in order to find, finallly, in just one frame, an illuminating example.