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657 tutors in 31 topics, built by 75 teachers. Each one follows a lesson plan its teacher wrote.

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Foundations 89

All Foundations89 AI basics25 How language models work23 AI safety and ethics49

Everyday AI 91

All Everyday AI91 Prompting20 ChatGPT and Claude at work25 AI for writing29 AI for research and study33

Building with AI 162

All Building with AI162 Python for AI21 Building with LLM APIs30 RAG and search21 Evaluation and testing21 AI agents31 AI automation25 AI coding assistants30

Machine learning 149

All Machine learning149 Machine learning35 Data science and statistics30 Math for AI23 Deep learning28 NLP14 Computer vision14 Fine tuning and training12 MLOps and deployment18

Creative AI 77

All Creative AI77 Image and video AI58 Audio and voice AI12 AI for design33

AI at work 145

All AI at work145 AI for business34 AI for marketing and sales23 AI for product and operations28 AI for education28 AI for professionals29 AI careers18

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Measuring Hallucination in LLM Apps

Measuring Hallucination in LLM Apps

Measure how often your app states unsupported things, with claim level checks you can repeat and trust.IntermediateEvaluation and testing4.5(2)42 lessonsSampleGonzalo Ibarra$8 Regression Testing Your Prompts

Regression Testing Your Prompts

Catch quality drops before users do by running an eval suite on every prompt, model or setting change.IntermediateEvaluation and testing4.5(2)42 lessonsSampleGonzalo Ibarra$7 Chunking Documents for Retrieval

Chunking Documents for Retrieval

Split documents into retrievable chunks that keep their meaning, then tune chunk size with real measurements.IntermediateRAG and search4.5(2)41 lessonsSampleEmeka Nwosu$6 When Retrieval Is the Wrong Tool

When Retrieval Is the Wrong Tool

Decide when RAG fits a problem and when a database query, tool call, longer prompt or plain search fits better.All levelsRAG and search4.5(2)40 lessonsSampleFumiko Arai$5 Extracting Structured Data from Messy Text

Extracting Structured Data from Messy Text

Pull reliable fields out of emails, notes and forms into clean records you can sort, count and trustIntermediateAI automation4.5(2)36 lessonsSampleHamza Qureshi$7 Error Handling and Exception Queues in Automations

Error Handling and Exception Queues in Automations

Design automations that retry sensibly, park problems in a queue and never fail silentlyIntermediateAI automation4.5(2)36 lessonsSampleHamza Qureshi$8 Keeping Your Coding Skills Sharp Alongside AI

Keeping Your Coding Skills Sharp Alongside AI

Use coding assistants every day without losing the ability to think, debug and design on your ownAll levelsAI coding assistants4.3(3)35 lessonsSampleJoanna KowalczykFree Learning a New Framework Without Copy and Paste

Learning a New Framework Without Copy and Paste

Understand a new web or app framework deeply enough to build and debug, not just paste generated codeIntermediateAI coding assistants4.5(2)34 lessonsSampleJoanna Kowalczyk$6 AI Steps Inside Workflows: Prompts That Behave

AI Steps Inside Workflows: Prompts That Behave

Write prompts for automation steps that return the same clean format every time, even on odd inputsIntermediateAI agents4.5(2)33 lessonsSampleHamza Qureshi$6 Classification and Routing for Tickets and Requests

Classification and Routing for Tickets and Requests

Sort incoming requests into the right queue automatically, with a safe path for anything uncertainIntermediateAI automation4.3(3)33 lessonsSampleHamza Qureshi$7 Writing System Prompts for Agents

Writing System Prompts for Agents

Write agent instructions that define role, tools, limits and done, and hold up across thousands of runsIntermediateAI agents4.5(2)29 lessonsSampleJamal Haddad$7 Prompt Caching for Lower Cost and Latency

Prompt Caching for Lower Cost and Latency

Structure prompts so repeated prefixes are cached, then measure the savings in cost and response time.IntermediateBuilding with LLM APIs4.5(2)28 lessonsSampleFarid Haddad$7