Overview:
Dan Shiffman being awesome and making Dan Shiffman videos on Neural Networks and General Machine Learning (and the math needed)
They are in Javascript and sometimes use p5.js but are fairly general/understandable/useful even if you do not know Javascript
Linear Algebra:
3Blue1Brown Essence of Linear Algebra
Gorgeous animated videos about the intuition behind linear algebra
Khan Academy Linear Algebra
arguably the best content on the web teaching linear algebra concepts/theory
concise yet complete
fast.ai Computational Linear Algebra for Coders
exercise/programming based curriculum
Python/Programming:
Learn X in Y minutes (Python cheatsheet)
UC Berkeley CS 61A (intro to computer science)
Machine Learning:
3Blue1Brown Neural Networks
fast.ai (great online courses in deep learning)
hands-on project based curriculum
geared towards coders
mathematicalmonk YouTube channel (more theoretical/math heavy)
AI and Deep Learning in 2017 review (and the wildml.com site in general)
distill.pub (interactive explanations of ML concepts and research)
Arthur Juliani's blog (ML tutorials mainly centered around reinforcement learning)
ML + Art:
Google's Artists and Machine Intelligence blog
The Magenta project
Glossaries:
UC Berkeley Glossary of Statistical Terms