15 Free Resources to Learn How AI and Neural Networks Work

A developer has compiled a curated list of 15 free resources for learning how AI works, ranging from basic neural network math to building large language models. The collection includes well-known offerings from Andrej Karpathy, 3Blue1Brown, MIT, Google, fast.ai, and Hugging Face, all accessible without requiring a sign-in. The list spans multiple formats including video courses, interactive textbooks, and short one-hour modules, covering topics such as deep learning, reinforcement learning, and AI agents. Classic academic texts like the Goodfellow et al. deep learning book and the Sutton & Barto reinforcement learning textbook are also included as free online reads. The full directory, organized by learning goal, is maintained at brianpfeil.com/learn.