Ashtanga on Youtube
Ashtanga is a different practice. Some of the principles of postures and the technique of transitions make Ashtanga one of the more unique practices in yoga. Here are some links to resources on Youtube specific to Ashtanga:
Freeman Taylor Yoga on Youtube
The Art of Vinyāsa: Richard Freeman and Mary Taylor - Vinyasa is more than the practice of the external form; it is a spiritual practice that allows for a deep and focused awakening. Find out how and why Ashtanga is both a physical and a spiritual practice
https://youtu.be/5OPojyNI374