- To use AI, open a free assistant like ChatGPT or Gemini in your browser or phone app, sign in, and type a question the way you would ask a helpful friend.
- Start with everyday tasks: drafting an email, summarising a letter, planning a trip, or translating a message.
- Never share passwords, bank details or medical records, and always double-check facts, dates and numbers.
- AI is bad at exact facts, breaking news, and medical, legal or financial decisions — treat answers as a first draft, not the final word.
An AI assistant is a website or app you can chat with in plain language. It reads what you type, then writes back an answer, a draft, a plan or a summary. This guide walks a complete beginner through the first hour: what to install, which free tool to pick, and ten everyday things to try, each with a prompt you can copy.
What an AI Assistant Actually Is
Behind the chat box sits a model — a huge pattern-matching program trained on text from books, websites and conversations. When you send a message, the model predicts a helpful reply one word at a time. It does not “know” things the way a person does; it is very good at language and patterns, and often wrong about exact facts.
You will meet a few terms quickly. A token is a chunk of text, roughly three-quarters of a word. The context window is how much text the assistant can hold in mind during one chat — bigger windows let you paste longer documents. You do not need to memorise these; just know that longer chats and bigger files use more of that window.
Pick a Free Assistant to Start With
The two easiest starting points are ChatGPT from OpenAI and Gemini from Google. Both have free tiers that cover everyday tasks. Anthropic’s Claude is a strong third option if you want to compare — see our Claude vs ChatGPT comparison.
ChatGPT Free
According to chatgpt.com/pricing (checked 11 September 2026), the Free plan costs $0 and gives you unlimited everyday text chats within OpenAI’s safety rules, plus limited file uploads, limited and slower image creation, limited voice, and limited Deep Research and memory. Paid plans on the same page: Go at $5/month adds more prompts, uploads, images, voice and longer memory (may show ads); Plus at $20/month adds advanced reasoning, projects, scheduled tasks and custom GPTs; Pro from $100/month gives 5x higher limits and top-tier reasoning. On all four personal plans, content may be used for training unless you opt out. For a deeper look see ChatGPT Free vs Go vs Plus vs Pro.
The same pricing page lists the chat context window per plan: 27K tokens on Free, 54K on Go and Plus, and 128K on Pro for the fast model, with reasoning context up to 256K on Go and Plus and 400K on Pro. These are the in-app limits — separate from the much larger API context windows developers pay for.
Gemini Free
According to gemini.google/subscriptions (checked 11 September 2026), the free tier gives you Gemini 3.6 Flash, some access to 3.1 Pro, image generation, Deep Research, Gemini Live, Canvas, 15 GB of Google storage, and a 32K-token context window. Google AI Plus at $4.99/month doubles those limits and adds video generation, 128K context and 400 GB storage; Google AI Pro at $19.99/month gives 4x the free limits, full 3.1 Pro access, a 1M-token context and 5 TB storage; Ultra is $99.99 or $199.99/month. College students in the US get a year of Pro free. Usage limits refresh every five hours, up to a weekly cap. Full breakdown: Is Gemini free? Google AI plans explained.
Which Should You Pick First?
| You want to… | Try first |
|---|---|
| Write emails, summarise text, learn things | ChatGPT Free |
| Work with Google Docs, Gmail, Drive | Gemini Free |
| Long, careful writing and analysis | Claude (free tier) |
| Research with live web sources | Perplexity |
You can use more than one. Many people keep two tabs open and compare answers. See ChatGPT alternatives for the full list.
Your First Hour: Ten Everyday Tasks
Copy any of these prompts into the chat box. Change the details in brackets to your own situation. The more context you give, the better the answer.
1. Write an Email You Have Been Putting Off
Prompt: “Write a polite email to my landlord asking to fix a leaking kitchen tap. I have mentioned it once already. Keep it under 100 words and friendly.”
2. Explain a Confusing Letter or Bill
Prompt: “I am pasting a letter from my bank below. Explain in plain English what they are asking me to do and by when. [paste letter]”
3. Plan a Trip
Prompt: “Plan a 4-day trip to Lisbon for two adults in May. We like food markets and walking, not museums. Budget €150 a day excluding flights. Give a day-by-day plan.”
4. Turn Fridge Contents Into a Recipe
Prompt: “I have chicken thighs, half a lemon, rice, spinach, garlic and yoghurt. Give me one dinner recipe for two, ready in 40 minutes.”
5. Summarise a Long Article
Prompt: “Summarise the article below in 5 bullet points a busy person can read in 30 seconds. [paste article]”
6. Learn a New Topic
Prompt: “Explain how a mortgage works to someone who has never had one. Use a simple example with round numbers. End with three questions I should ask before signing.”
7. Translate a Message
Prompt: “Translate this into natural Spanish for a message to a friend, not a formal letter: [paste text].” For heavier work compare tools in our AI translation tools guide.
8. Improve a Job Application
Prompt: “Here is the job ad and my CV. Rewrite my CV summary in 4 lines so it matches the role, using my real experience only. Do not invent anything. [paste both]”
Be honest: many employers and schools ban passing AI-written work off as your own. Use AI to draft and edit, then rewrite in your voice.
9. Build a Weekly Schedule
Prompt: “Build me a Monday-to-Friday schedule. I work 9–5, want to exercise 3 times, read 30 minutes a day, and cook dinner 4 nights. Give it as a table.”
10. Fix a Photo
Most chat assistants can now edit images you upload — for example, removing a background or brightening a dark shot. For stronger tools see how to unblur a picture and the best AI photo editing apps.
What AI Is Bad At
Treat these as warning signs:
- Exact facts and numbers. Dates, prices, phone numbers, sports scores and quotes are often wrong. Check them on a real source.
- Breaking news. If the assistant cannot search the web live, its knowledge stops months ago.
- Medical, legal and financial decisions. Use AI to understand your options, then talk to a qualified person before acting.
- Anything about you it cannot verify. It will happily invent your job history if you ask it to.
When accuracy matters, ask the assistant to “list the sources” or turn on its web-search mode.
Privacy Basics
Assume anything you type could be read by a human reviewer or used to improve the model unless you have turned that off. Never paste:
- Passwords, bank card numbers or full ID numbers
- Medical records with your name attached
- Other people’s private messages or personal data
- Confidential work documents your employer has not approved for AI use
Both ChatGPT and Gemini have settings to turn off training on your chats and to delete history. Find them in the app’s settings under “Data controls” or similar. Be aware of deepfakes too — if a video or voice message feels off, it might be fake.
Going Further
Once the basics feel easy, branch out. Try making AI images, explore free AI video generators, or turn a stack of PDFs into a study guide with NotebookLM. For a full toolbox see 25 free AI tools.
Frequently Asked Questions
Do I need to pay to use AI?
No. ChatGPT, Gemini and Claude all have free tiers that handle everyday writing, summarising and questions. Paid plans mainly add higher limits, faster responses and access to their newest models. Most people can stay on free for months.
Which is better, ChatGPT or Gemini?
They are close for everyday use. Gemini fits better if you live in Gmail, Docs and Drive; ChatGPT has a slight edge for creative writing and custom GPTs. Try both with the same question and see which answer you prefer.
Is it safe to give AI my documents?
For public information — a news article, a recipe, a public letter — it is fine. For anything with personal data, remove names, addresses and account numbers first, or turn off training in your settings. Employers often have their own rules; check before uploading work files.Will AI take my job?
For most jobs, not soon — but it will change how you do parts of your work. People who learn to use AI well tend to do more in less time. Our full look at the question: will AI take your job.
Why does AI sometimes make things up?
Because it predicts likely-sounding words, not verified facts. This is called “hallucination”. Reduce it by giving the assistant the source text, asking it to cite sources, or using a search-enabled tool like Perplexity or Gemini’s Deep Research.
Can I use AI on my phone?
Yes. ChatGPT, Gemini, Claude and Perplexity all have free iPhone and Android apps with voice input. See the best AI apps for iPhone or the best AI phones if you are shopping for a device.