This is a video on chromatic harmony and is part one of a six part series on using chromatic triads.
Here is a pdf of the 13 transformations (or progressions) in level 1 in all 12 keys: https://drive.google.com/file/d/1qtrEahAL0LTTtJ0dfi_ykZRZHNXo1vHB/view?usp=sharing
Here is a link for 12tone's video on Neo-Riemannian theory: https://www.youtube.com/watch?v=_VxN4rnOpho
