See how AI reads your words
AI models do not read words. They read tokens: small pieces of text. Type anything and see it split into tokens, the same way a real model sees it.
Learn generative AI, how the AI engine works behind the scenes, how it creates images and how tokens work, with lessons and podcasts for every profession.
Short AI lessons. In your language.
AI Basics
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Real activities from our lessons. Learn by trying them yourself.
AI models do not read words. They read tokens: small pieces of text. Type anything and see it split into tokens, the same way a real model sees it.
AI turns text into arrows called vectors. Arrows that point the same way have a similar meaning. Drag A and B and watch three ways of measuring how close they are.
Engineers learn to build AI. Everyone else learns to use it at work, safely and with confidence. Most courses need no coding.
Build real AI apps step by step: machine learning, AI agents and chatbots that use your own documents.
See all courses →Write clear notes, explain conditions in plain words and use AI safely with patient data.
See all courses →Research faster, draft and review documents, and check every source AI gives you.
See all courses →Plan campaigns, write ads and emails, improve SEO and read your results.
See all courses →Write test cases, automate checks, test APIs and test AI features.
See all courses →Plan videos, write scripts, make thumbnails and grow your channel.
See all courses →Hire fairly, onboard new staff and write clear HR policies.
See all courses →Speed up bookkeeping, analyse reports and spot fraud.
See all courses →You ask in plain English. AI writes a first draft. You check it. Our courses teach all three steps.
You ask
Write a Python function that returns the 3 most common words in a sentence. Add a short comment.
AI writes a draft
from collections import Counter def top_words(text, n=3): # Count each word, ignoring upper and lower case words = text.lower().split() return Counter(words).most_common(n)
You check it
You ask
Explain type 2 diabetes to a new patient in simple words. Use short sentences. Do not use any patient details.
AI writes a draft
Type 2 diabetes means your body does not use sugar from food well, so sugar stays in your blood. You can keep it under control with healthy food, regular exercise and, for some people, medicine. Your doctor will check your blood sugar and help you make a plan.
You check it
You ask
Summarise this rental agreement in 4 short points for my client. Point out anything unusual. (Names removed.)
AI writes a draft
• A 12-month tenancy, starting on 1 May. • Rent is due on the 1st of each month. • The tenant pays for small repairs. • Unusual: the landlord can visit with only 2 hours' notice.
You check it
You ask
Write 3 subject lines for our spring sale email. Friendly tone. Under 45 characters each.
AI writes a draft
1. Spring is here, and so are the savings 2. Fresh deals for a fresh season 3. Your spring sale starts today
You check it
You ask
Write test cases for a login form with email and password. Include edge cases.
AI writes a draft
1. Correct email and password: the user logs in. 2. Wrong password: an error shows and the user stays out. 3. Empty email: "Email is required". 4. Email without @: "Enter a valid email". 5. Five failed tries: the account is locked for a while.
You check it
You ask
Give me 5 YouTube video ideas about saving money for students. Short, catchy titles.
AI writes a draft
1. I tried a no-spend week. Here is what happened 2. 7 money mistakes every student makes 3. Cheap meals that still taste great 4. How I saved for my first laptop 5. Student discounts most people miss
You check it
You ask
Write a friendly job advert for a junior accountant. Use fair, inclusive words. Under 80 words.
AI writes a draft
Join our finance team as a Junior Accountant! You will help with monthly accounts, invoices and reports. We will train you and support you as you grow. You have basic accounting knowledge, care for detail and a wish to learn. We welcome people from every background. Flexible hours are available.
You check it
You ask
Sort these expenses into categories: taxi to client, printer ink, team lunch, software subscription, train ticket.
AI writes a draft
• Travel: taxi to client, train ticket • Office supplies: printer ink • Meals: team lunch • Software: software subscription
You check it
You ask
Write a short follow-up email to a customer who asked for a demo last week but has not replied. Polite, not pushy.
AI writes a draft
Subject: Your demo, whenever suits you Hi Sam, I hope your week is going well. Would you still like a demo? I can show you the main features in 20 minutes. Would Tuesday or Thursday work for you? Best wishes, Alex
You check it
You ask
Write a short Instagram post announcing that my bakery now delivers at weekends.
AI writes a draft
Fresh bread, now at your door! 🥐 From this Saturday, we deliver every weekend. Order by Friday evening and we will bring your favourites warm from the oven. Tap the link in our bio to order.
You check it
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Code, listen, ask questions and earn certificates, all inside CoffeeBean AI.
Python, JavaScript, SQL and more run right in the lesson. There is nothing to install.
course = "Generative AI"
lessons = ["Prompts", "Tokens", "Agents"]
print("Welcome to", course)
for number, lesson in enumerate(lessons, 1):
print(number, lesson)
Finish a course and get a certificate with your name. Print it or share its link.
Course podcasts you can play on the way to work.
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Four simple steps. Every course follows the same path.
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Each lesson explains one idea with a clear diagram and simple words.
Sort, order and test ideas, then run real code in your browser.
Finish every lesson and get a certificate you can print or share.
Examples of how engineers, doctors and lawyers can use what they learn on CoffeeBean AI.
Generative AI Fundamentals
The course helped me understand how generative AI really works under the hood. Now I use it every day to write, test and review code faster.
Building RAG Applications
The step-by-step lessons helped me build my first RAG app with a vector database and ship it at work within a month.
AI for Doctors in Clinical Practice
The course showed me how to use AI to double-check my clinical notes and find recent research faster, without losing my own judgement.
AI for Contract Review
I now review contracts with AI as a first pass and spend my time on the clauses that actually need a lawyer's attention.
What is RAG? Learn how retrieval-augmented generation lets an AI model look up your own documents before it answers, with simple steps and examples.
Read Blog →What is a vector database? Learn how vector embeddings and vector search help AI apps find text, images and products by meaning, with simple examples.
Read Blog →Learn how to build an AI agent in Python: the simple loop of model, tools, memory and a stop rule, plus a small example you can run with no API key.
Read Blog →How do LLMs work? A simple guide to tokens, embeddings, attention and next-token prediction, and how a large language model is trained step by step.
Read Blog →