Reddit reviews Anatomy Trains: Myofascial Meridians for Manual and Movement Therapists

There's an entire textbook written about fascia, and the video posted goes over just one small component of its nature. The book also contains extensive citations.

Anatomy Trains

Also, the fuzz that melts/disintegrates under his fingers is not the stuff that's been accumulating for years. The stuff that easily gives way was most likely only accumulating for the period near the end of the person's life, when they were less mobile than normal. He does show a scapula with significant adhesions, and it does not easily melt or give way. It's easier to work through in a living, breathing human as body heat contributes significantly to the pliability of the tissue, but the difference between pathological adhesions and healthy tissue is readily palpable in a living person, and its effects are readily apparent in structure and movement patterns.

I'd recommend a movement therapy book, actually. Assuming you know physiology already.

Jack Dempsy's Championship Fighting is nice as well.

If you're looking for more philosophy, I just picked up Relaxing into your being, flipping through it looks like there's some good advice and exercises within. Peter Ralston wrote some stuff in a similar vein, but more abstract.