As for palatalization, here are two videos that I’ve found helpful in this regard:
Russian grammar has an explanation that includes very clear general diagrams:
Fluent in Russian doesn’t provide pictures but gives very detailed, practical tips about how to pronounce each of the soft sounds and how their articulation compares with the corresponding hard ones:
As for diagrams for every phoneme articulation, complete with IPA symbols, this playlist may be what you’re looking for: