An ever-expanding list of only the best online and offline resources I've come across.

Online resources:
The Futur is all about the business of design.
Art & Design Playlists is a collection of art playlists I've put together on Youtube, organized loosely by topic.
Foundation Group by John J. Park and Matthew Zikry, a Patreon focused on teaching art and design fundamentals at an affordable price.

Meditations - Marcus Aurelius
Ego is the Enemy - Ryan Holiday
Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig
Lila; An Inquiry into Morals - Robert M. Pirsig