Lesson 1 · 4 minutes
What ChatGPT is, in plain English
No jargon, no hype: what it does well, what it gets wrong, and why people find it so useful.
ChatGPT is a program you can talk to in ordinary language. You type (or say) a question or a request, and it writes an answer back in a few seconds, like texting with a very well-read assistant.
What it's good at
- Writing: letters, emails, cards, messages, in any tone and length.
- Explaining: anything from "what is a mortgage offset?" to "how do bees survive winter?", as simply as you like.
- Organizing: turning a jumble of notes into a list, a plan, a timetable or a table.
- Brainstorming: gift ideas, dinner ideas, names, things to do on a rainy day.
What it gets wrong
ChatGPT predicts words based on huge amounts of text it learned from. It doesn't "know" things the way a person does, and it can state something false with total confidence. It can also be out of date. So it's a brilliant helper and a poor oracle: use it to draft, explain and organize, and check anything important such as dates, money, health or rules.
Is it the only one?
No. ChatGPT (made by OpenAI) is the best known, but Claude (Anthropic), Gemini (Google) and Microsoft Copilot work in a very similar way. Everything in this course works with all of them. We use ChatGPT for the examples because it's the one most people try first.
Talk to it like a capable new assistant who's never met you: give it the details of your situation, and you'll get an answer that fits your life.


