I've worked with AI for decades and have a master's degree in education. Here are the top free AI courses online that I recommend - and why.
Deep Learning with Yacine on MSN

RMSProp optimization from scratch in Python

Understand and implement the RMSProp optimization algorithm in Python. Essential for training deep neural networks ...
Build the AdamW optimizer from scratch in Python. Learn how it improves training stability and generalization in deep ...
TL;DR: A wide range of AI courses are available to take for free on Udemy.