No paywall. For free (I added the links too):

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1. Introduction to Generative AI

A step-by-step guide to how gen AI works.

Link: generative-ai-course.hk…

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2. Prompt Engineering

Get tips to get better results from any model.

Link: generative-ai-course.hk…

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3. Beyond Chatbots: System Prompts, RAG

Go deeper than chatbots.

Link: generative-ai-course.hk…

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4. CS50x 2025 – Artificial Intelligence Lecture

Covers neural networks, LLMs, and AI use cases.

Link: cs50.harvard.edu/x/week…

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5. CS50 Extension - AI / Prompt Engineering

Design, test, and improve prompts for any AI tool.

Link: cs50.harvard.edu/extens…

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6. GPT-4: How does it work, & how to build apps?

A deep dive into GPT-4’s inner workings.

Video: youtube.com/watch?v=vw-…

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7. LLMs and the End of Programming

See why prompt engineering is the new coding.

Video: youtube.com/watch?v=JhC…

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8. Generative AI in Teaching & Learning

A full playlist on using AI in education.

Playlist: youtube.com/playlist

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9. Teaching with AI in the Classroom

A practical guide for teachers and trainers.

Link: hbsp.harvard.edu/educat…

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10. The Basics of Generative AI

A simple, no-jargon intro to generative AI.

Link: sites.google.com/g.harv…

♻️ Restack this so your network can find the best free resources, too.