What is an AI agent (and why it's not just a chatbot)

The difference between a chatbot that responds and an agent that acts, with a concrete example, where it's truly beneficial to use it and where caution is needed.
RAG explained simply: Give your documents to AI without hallucinations

What is RAG and how does it allow an AI to answer questions about your documents without making things up: how it works, a practical example, and where to be careful.
AI Agents: How They Connect to Your Tools

What is the Model Context Protocol, why is it different from a custom integration, and how to securely connect an AI agent to your tools, starting with just one.
How much does an AI agent really cost (and what does it depend on)

An AI agent has two costs: building it and running it, with the second cost increasing with usage. What does the expense really depend on, and how to reason in terms of return?.
Claude Chat, Cowork, and Claude Code are not the same thing.

Claude Chat, Claude Cowork, and Claude Code seem similar but do different things. A practical guide to their differences, with examples and when to use each.