Free course
Free Prompt Engineering Course
Ten free lessons that take you from what a prompt is to context engineering and prompt injection, in the order you would learn them. No sign-up and no coding needed.
- 10 lessons
- Free, no sign-up
- Beginner friendly
Prompt engineering is writing instructions that get reliable, useful answers from an AI model. It matters because the same model gives very different results depending on what you ask and how. This prompt engineering course starts with how a model reads your text, moves through the techniques that make answers dependable, and ends with the security risks you need to know about once prompts reach real users.
The lessons, in order
- 1What is Prompt EngineeringWhat a prompt is and how to write one that gets the same good answer every time.
- 2Tokens and TokenizationHow a model reads text in pieces, and why that changes cost and length limits.
- 3The Context WindowHow much a model can read at once, and what happens to anything past the limit.
- 4System Prompt vs User PromptWhere the standing rules go, where the question goes, and why the split matters.
- 5Zero-shot and Few-shot PromptingWhen to give the model worked examples and when to leave them out.
- 6Chain of Thought PromptingAsking the model to work through a problem step by step before it answers.
- 7Structured Output (JSON)Getting answers back as data your code or spreadsheet can use directly.
- 8Temperature and Top-pThe two settings that make answers more varied or more predictable.
- 9Context EngineeringChoosing everything the model sees, beyond the prompt you type.
- 10Prompt Injection and SecurityHow attackers slip instructions into a prompt, and how to defend against it.
Common questions
Is this prompt engineering course free?
Yes. All ten lessons are free to read with no sign-up. Each one has a diagram, a worked example, a short quiz and answers to common questions.
Do I need to code?
No. The lessons explain prompting in plain language. A few include short Python examples, which you can skip without missing the idea.
How long does it take?
Most people read a lesson in one sitting. Go in order the first time, because later lessons build on the earlier ones.
What can I do with prompt engineering skills?
Use AI tools reliably in analyst, product, marketing and operations work, where interviews now often ask you to prompt a tool live. The prompt engineering jobs guide below covers what employers test.