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What Is ChatGPT and What Can It Actually Do?

BeginnerAbout 6 minutes to readBy Phil at Life Begins At Sixty

If you've heard the name ChatGPT and quietly wondered what everyone's on about, this is the page for you. No jargon, no assumptions, and definitely no acronyms.

By the end, you'll know what it is, what it's good at, and when to double-check it.

In one sentence

ChatGPT is a website and a phone app where you type a question or a request, and it types back an answer that sounds like a person wrote it.

That's it. It isn't a search engine with a new coat of paint, and it isn't a robot living in your computer. It's a conversation partner that's read an enormous amount of text and learned the patterns in it.

How a conversation works

That last point is the magic bit. Because it remembers what you've already said, you can build on an answer gradually rather than getting everything right first time.

  1. 1You open the official website, chatgpt.com, in your browser.
  2. 2You type your question in the message box at the bottom of the screen.
  3. 3You press send — or the Enter key.
  4. 4ChatGPT writes back, usually within a few seconds.
  5. 5You reply. You can ask it to change something, explain more simply or start again. It remembers the earlier part of the conversation.

A simple practical example

Suppose you're writing a note to your GP's surgery and you're not sure how to phrase it. Try this:

Example prompt

I need to write a short, polite message to my GP surgery asking for a repeat prescription. Please keep it under 100 words, friendly but professional, and in British English. Leave a [square bracket] where I should put my name and date of birth.

It'll produce a draft you can copy, edit and send. You'll probably want to tweak a word or two — that's normal, and it's the right way to use it.

Is it free?

There's a free version, and for most everyday questions it's perfectly good. There are optional paid plans with extra features, and some features on the free version have usage limits.

You may be able to start chatting without registering. Creating an account lets you keep your conversation history and use the app on more than one device.

These details do change from time to time, so always follow whatever the official website tells you.

What it's good at, and what it isn't

  • Good at: explaining things in plain English, drafting messages, brainstorming ideas, tidying up your writing and summarising a long document you paste in.
  • Less good at: anything needing up-to-the-minute facts — today's prices, opening times, news, or sports results.
  • Cannot: browse your computer, know your passwords, or see your bank details unless you type them in — which you shouldn't.
  • Occasionally confidently wrong: it can produce an answer that sounds completely convincing and is entirely made up. Always check anything that matters.

A useful habit: before acting on anything important, ask yourself, "Could I check this somewhere else?" If yes, do.

The official address

ChatGPT is made by a company called OpenAI. The official website is chatgpt.com.

Type that address in yourself rather than clicking a link in an email or a message, whatever it claims. That's good practice for anything that asks you to log in.

In short

ChatGPT is a conversation with a very well-read assistant. Ask clearly, build on the answer, and check anything that matters.

Ready for the next one?

Have a browse through the Learning Library — there's no exam at the end, promise.

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