AI Basics by Aryash.guru
Use AI well.
Free, plain-English guides to the tools changing how we work.
ChatGPT. Claude. Gemini. Perplexity. The names are everywhere. The guides are mostly written for people who already know what they're doing. These pages are for everyone else.
Start with ChatGPTWhat is AI? In one minute.
These tools are called Large Language Models — LLMs for short. You can think of them as very good autocomplete. You type something, and the model predicts what useful words should come next. The result feels like a conversation.
They are useful because they have read a huge amount of text and can put ideas together quickly. They can explain, summarise, translate, draft, plan, and practise with you.
They are not magic. They can be confidently wrong. They do not know what happened yesterday. They do not have your judgement. The goal is to use them — not to trust them blindly.
Pick a tool
Four big ones. Four guides ready.
ChatGPT
LiveThe most-used chatbot.
Made by OpenAI. Good all-rounder. Free tier is generous.
Claude
LiveThe careful writer.
Made by Anthropic. Strong at writing and thinking through problems.
Gemini
LiveThe Google one.
Made by Google. Built into Google apps you already use.
Perplexity
LiveThe answer engine.
Searches the web and shows its sources. Better when facts matter.
Use AI safely
Four simple rules. Each one will save you trouble.
Don't share secrets
Never paste passwords, bank details, ID numbers, or other people's private information. Treat the chat box like a postcard, not a diary.
Check the facts
If it matters, check it. AI can sound certain and still be wrong. Names, dates, numbers, laws, medicines — always verify.
Be specific
Vague questions get vague answers. Tell it who you are, what you need, and what good looks like. The more you give, the better it works.
Keep your judgement
AI is a tool. You are the one with the situation, the stakes, and the responsibility. Use what helps. Discard the rest.
Two more tools to try
Build prompts in 60 seconds, or read three short lessons on how prompting works.
Master Prompt Builder
LiveA free, form-driven tool that builds clear, complete prompts for ChatGPT, Claude, Gemini, or Perplexity. Pick what you need. Get a copy-and-paste prompt. Open the AI of your choice. Done.
Open the tool →
Prompt Basics
LiveThree short lessons on the meta-skill of prompting. How to ask. How to refine. How to know when AI is the wrong tool for the job.
Open the tool →
Aryash.guru — what is inside
Four free pillars. Open any door.
Foundations
How money and business work.
Careers
How to talk, listen, and lead at work.
Vaani
Speak English with confidence.
AI Basics
You are hereHow to use ChatGPT, Claude, Gemini, Perplexity.
All free. Always free. From a doctor in the UK with roots in India.
Built by
Aryash.guru is built by Dr Krishnan Pasupathi — a doctor in the UK with roots in India. AI Basics is one of four free pillars. The other three are linked above.
For questions, email feedback@aryash.health.