HUMAN UI manual or example files

Is there any manual or example files to get familiar with HUMAN UI?
Opposed to default Grasshopper commands which is rather easy to figure out, majority of these widgets impossible to use without example files. Some of them really require figures to use. I know that there a bunch of videos out there, however most of the are speeded up so much that impossible to use for learning. These are rather marketing videos to see benefits of the product. Also they cover far not by all the elements.