ChatGPT is a free AI chatbot that understands plain-language instructions and replies with text. You type a question or a task, like "write a leave email to my manager", and it writes back in seconds. It was made by OpenAI and you use it in a web browser or its app. For students and office workers, it's a fast helper for writing, explaining and summarising, as long as you check what it gives you.
What ChatGPT actually is
ChatGPT is a program trained on huge amounts of text so it can predict helpful responses. It isn't a search engine and it isn't always right. Think of it as a quick assistant that drafts, explains and rephrases, and treat its answers as a first draft you verify, not final truth.
How to sign up
- Go to chat.openai.com (or download the ChatGPT app).
- Click Sign up and register with an email or a Google account.
- Verify your email and log in.
- You'll see a chat box at the bottom. That's where you type.
The basic version is free. There's a paid plan with newer features, but you don't need it to start.
How to use it: type and read
Using ChatGPT is a conversation. You type an instruction, it replies, and you can ask it to change the reply. For example:
- You: "Write a short leave email for two days for a fever."
- ChatGPT: writes the email.
- You: "Make it more formal and shorter."
- ChatGPT: rewrites it.
You keep refining until it's right. This back-and-forth is the whole skill.
Simple things to try
| Task | What to type |
|---|---|
| Write an email | "Write a polite email asking for a meeting on Monday." |
| Explain a topic | "Explain GST in simple words for a beginner." |
| Summarise text | "Summarise this paragraph in 3 points: [paste text]." |
| Fix your writing | "Correct the grammar in this message: [paste]." |
| Get ideas | "Give me 5 topic ideas for a computer class project." |
Worked example
A student pastes a long chapter and types: "Summarise this in 5 simple bullet points for revision." ChatGPT returns a short, clear summary. The student then asks, "Now make 5 quiz questions from it," and gets a practice test. Two minutes of work replaced an hour of note-making, though the student still checks the facts against the book.
Pro tips
- Be specific. "Write a resignation email" is okay; "Write a polite one-month-notice resignation email for an accountant role" is much better.
- Tell it the tone and length: "formal", "friendly", "under 100 words".
- If the first answer isn't right, don't start over, just say what to change.
Common mistakes
- Trusting it blindly. ChatGPT can state wrong facts confidently. Verify anything important, especially numbers, dates and rules.
- Vague prompts. A one-word request gives a generic answer. Add detail.
- Pasting private data. Don't paste passwords, Aadhaar, bank details or confidential company data.
Key takeaways
- ChatGPT is a free AI chatbot that writes and explains from your instructions.
- Sign up with an email or Google account and type in the chat box.
- Refine answers by telling it what to change.
- Always verify important facts; never share private data.
Practice task
Sign up, then ask ChatGPT to write a short self-introduction for a job interview. Then ask it to make the introduction more confident and under 60 words. Notice how the second reply improves.
Want to use AI properly for office work? The ADCA (AI Integrated) program at HCI teaches AI tools alongside core computer skills.
Frequently Asked Questions
What is ChatGPT?
ChatGPT is a free AI chatbot made by OpenAI. You type an instruction or question in plain language and it replies with text, such as an email, explanation or summary.
Is ChatGPT free to use?
Yes, there's a free version that covers most everyday needs. A paid plan adds newer features but isn't required to start.
How do I use ChatGPT for the first time?
Sign up at chat.openai.com with an email or Google account, then type your question or task in the chat box and read the reply.
Is ChatGPT always correct?
No. It can give wrong or outdated information confidently, so verify important facts, figures and rules before relying on them.
Is it safe to put personal information in ChatGPT?
Avoid it. Don't paste passwords, Aadhaar, bank details or confidential data, as you shouldn't share sensitive information with online tools.