Useful AI links. We keep it simple.

A short, hand-picked list of free and trusted places to keep learning about AI. Every link goes to the original website.

Free courses to learn the basics

New to AI? Begin with Elements of AI, which needs no coding. The later courses get more technical.

Elements of AIA free, beginner-friendly online course created by the University of Helsinki and MinnaLearn.Visit site →Machine Learning Crash CourseGoogle’s free course on how machine learning works, with videos and short exercises.Visit site →DeepLearning.AIShort courses and tutorials on AI topics from Andrew Ng’s education company.Visit site →Hugging Face LearnFree courses on language models, agents and more, for people ready to try hands-on work.Visit site →Practical Deep Learning (fast.ai)A free, code-first course that teaches deep learning by building real projects.Visit site →

See AI in action

Interactive tools and videos that make the ideas easier to picture.

Transformer ExplainerWatch a Transformer, the design behind modern chatbots, work step by step in your browser.Visit site →3Blue1Brown: Neural networksA beautifully animated video series that shows how neural networks learn.Visit site →TensorFlow PlaygroundPlay with a tiny neural network in your browser and watch it learn patterns.Visit site →Teachable MachineTrain a simple image, sound or pose model with your webcam. No code needed.Visit site →

Learn to write better prompts

Clear instructions give better answers. These guides go deeper than our CRISPE page.

Prompt Engineering GuideA large, free, open guide to prompting techniques, kept up to date by the DAIR.AI community.Visit site →Anthropic: Prompt engineering overviewPractical tips for writing clear prompts, from the makers of Claude.Visit site →OpenAI: Prompt engineering guideStrategies for getting reliable results from language models, from the makers of ChatGPT.Visit site →

AI history, safety and trends

Understand where AI came from and how people are working to use it responsibly.

History of artificial intelligenceA thorough Wikipedia overview of AI from its earliest ideas to today.Visit site →NIST AI Risk Management FrameworkThe U.S. government’s voluntary guide to building and using trustworthy AI.Visit site →Stanford AI IndexAn annual, data-rich report on how AI is progressing and being used worldwide.Visit site →

Try an AI assistant

Free versions are available from each provider, with limits that change over time.

ChatGPTOpenAI’s AI assistant.Visit site →ClaudeAnthropic’s AI assistant.Visit site →GeminiGoogle’s AI assistant.Visit site →

A note about these links

AI-Focus is an independent learning site. These links open other websites that we do not own or control, and listing them is not an endorsement or partnership. Check each site’s own terms and privacy policy. Know a great free resource we missed? Tell us on the contact page.