AI is the fastest-moving skill area online right now, and the course catalogue reflects it — everything from non-technical "AI for your job" primers to full deep-learning and TensorFlow certification tracks. The good news is you can learn most of it for very little. Udemy's applied AI courses (ChatGPT mastery, Machine Learning A-Z, deep learning) drop to $13.99–$14.99 during sales, and the foundational theory is available free.
If you want the canonical starting point, Andrew Ng's Machine Learning Specialization and DeepLearning.AI's AI For Everyone and Generative AI for Everyone are all auditable for free on Coursera — these are the courses most working ML engineers learned from. Pair one of those for the fundamentals with a hands-on Udemy course for the practical coding, and you have a complete, near-free curriculum.
Deals are updated weekly. Beginners should start with a highly rated fundamentals course; if you already code, jump straight to the applied deep-learning and NLP deals.
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AI & Machine Learning Courses — FAQ
How can I learn AI and machine learning for free?
Audit Andrew Ng's Machine Learning Specialization and DeepLearning.AI's AI For Everyone on Coursera — both unlock the full course content for free. Google AI Essentials and IBM's AI Engineering certificate can also be audited at no cost. You only pay if you want the certificate.
What is the best AI course for beginners?
For non-coders, AI For Everyone or Google AI Essentials give you a working understanding of AI with no maths. For those ready to build, Andrew Ng's Machine Learning Specialization is the most widely recommended starting point, and Udemy's Machine Learning A-Z is a popular hands-on alternative.
Do I need to know how to code to learn AI?
Not to start. Strategy and literacy courses (AI For Everyone, Generative AI for Everyone) require no coding. To build models yourself you'll need Python — which you can pick up from a discounted programming course on this site.