anything focused on simulations and DOPs

http://www.appliedhoudini.com/

the best resource for FX stuff. taught by Stephen Knipping who is the head of destruction fx at ILM. really good at explaining stuff. paid tutorials but the first episodes in each of his series are free.

Intro to vellum (by me)

good for softbodies, cloth, character FX. i have some others on my youtube page and gumroad

Jason Harmon aka WhatIFound does great intermediate to advanced liquid/fluid tutorials

Vellum cloth updates masterclass from Jeff Lait (18.0)

More vellum updates (rigid bodies and fluid mostly) from John Lynch (19.5)