// Series · 1 part

AI from Zero

AI from Zero is for anyone who has used ChatGPT and wondered, “How does this actually work?” We start from the very beginning: what AI is, how machines learn, and what’s really happening inside a large language model. Every idea is explained with everyday examples, simple diagrams and no heavy maths. Then we go beneath the surface: tokens, embeddings, attention, and why AI sometimes makes things up. Once the foundations are clear, we put them to work, building a real AI-powered app step by step with Ruby on Rails and PostgreSQL. No prior AI knowledge needed. Just curiosity.