The AI encyclopedia
for builders.
Every concept, tool, and technique — explained plainly. Read it all and you'll be fluent.
Start with Foundations if you're new. Jump in anywhere if you're not.
Foundations
Start here. What AI is, how it works, and the mental model you need to use it well.
What Is AI?
A plain-English explanation of artificial intelligence — what it is, how it works, and why it matters now.
How Language Models Actually Work
What's actually happening inside ChatGPT and Claude — explained without the jargon.
AI vs Machine Learning vs Deep Learning
These three terms get used interchangeably. They mean different things. Here's the map.
What AI Can't Do (Yet)
Knowing the limits makes you more effective. Here's where AI still fails.
Choosing the Right AI Tool for the Job
Using the wrong tool costs you time. Here's exactly which tool to reach for and when.
Tools
The tools that matter — what each one does best and when to reach for it.
ChatGPT
OpenAI's flagship AI — the most widely used in the world. What it is, what it's best at, and how to get the most out of it.
Claude
Anthropic's AI, built with a focus on safety and depth. Where it outperforms and when to reach for it.
Perplexity
AI that searches the live web and gives you real answers with sources. What Google should have become.
Midjourney
The best AI image generator available. How it works and how to write prompts that actually produce what you want.
Runway
AI video generation and editing. Generate video from text or images, and edit existing footage with AI.
ElevenLabs
Text-to-speech AI that sounds like a real human. Voice cloning, multilingual audio, and professional voiceovers in seconds.
Techniques
How to get better outputs. Prompting, reasoning, agents, and advanced methods.
Prompt Engineering
The skill of writing inputs that get great outputs. The most valuable AI skill you can develop.
Chain-of-Thought Prompting
Making AI reason step by step before answering. One technique that dramatically improves accuracy on hard problems.
AI Agents
AI that takes actions, not just generates text. The difference between AI that talks and AI that does.
Retrieval-Augmented Generation (RAG)
How to give AI knowledge it wasn't trained on — your documents, your data, your business context.
Fine-Tuning
Retraining an AI model on your own data. When it's worth it, when it's not, and how it works.
For Business
Practical playbooks for using AI to build, market, and run a business.
AI for Product Research
How to use AI to compress weeks of product research into hours — with the prompts that make it work.
AI for Copywriting
How to use AI to write better than either you or the AI could alone. The workflow, the prompts, the rules.
AI for Content Creation
One idea, ten formats. How to use AI to scale your content output without scaling your time.
AI for Automation
How to automate the repetitive work that currently takes human time. The tools, the workflow, and where to start.