Module 1 · Foundations — what ChatGPT is Lesson 1 of 15
Meet ChatGPT — what it is and who makes it
ChatGPT is OpenAI's general-purpose assistant. It is at its best at taking a messy situation and giving you a structured first draft of it. It is at its weakest when you need it to disagree with you, or when a fact has to be exactly right — and knowing both halves is what separates somebody who uses it well from somebody who trusts it blindly.
The concept
ChatGPT is a general-purpose assistant made by OpenAI. The models behind it are the GPT family and OpenAI's reasoning models. None of that matters on its own — what matters is that you know what kind of worker you have hired. At taking a messy situation and giving you a structured first draft of it is the job you hand it. When you need it to disagree with you, or when a fact has to be exactly right is the job you keep.
Most people come to a course like this expecting a list of magic words. There is no such list. What there is, is a tool that produces fluent, well-organised text that usually needs one careful edit, and produces it at a speed no human matches — which means the skill is not in writing the prompt, it is in knowing what a good answer looks like so you can tell the difference.
Here is the first thing to try, worded the way you will word things for the rest of the course:
Read the answer twice. The first read is for the content; the second is for the shape — did it answer the question you asked, or the question it found easiest? That second read is the habit this whole course is built on.
I am a 2026 graduate looking for my first data analyst job. Ask me 5 questions, one at a time, that would tell you exactly what I am missing. Do not give advice until I have answered all 5.Worked example
The answer is a five-question interview instead of a listicle — which is the difference between a tool that knows you and a tool that knows the internet.
Your practice task
Open ChatGPT, ask it the one question you would normally put to a search engine about your own field, and write down two things: whether the answer was right, and whether it would have taken you longer to find it yourself.
Do this before moving on. Reading a solution teaches the shape of it; typing it teaches you.
Key takeaway
ChatGPT is a general-purpose assistant made by OpenAI.
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