Lesson 11: What is a Provider? Who Gives You Access to Models
Understand the model → provider → user chain, and why the same model can cost different amounts depending on where you use it.
Infrastructure
Lesson 12: What is an API? The Gateway to LLMs
We demystify APIs — what they are, how they work, and why you need one for an agent.
Lesson 13: Free vs Paid — Where Can I Use AI Without Paying?
A map of real free options for using AI: from web chats to local models on your computer.
Lesson 14: Local Models — Running an LLM on Your Computer with Ollama
What it means to run a model locally, when it makes sense, how Ollama works, and what models you can run based on your hardware.
Lesson 15: Summary — The Complete Map for Accessing an LLM
We consolidate everything learned with a clear mental diagram, a comparison table, and a decision tree for choosing your model and provider.