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IntroductoryFree3h of content · 1 guided lab200 XP

Introduction to AI

Understand AI without the hype. What artificial intelligence really is, how a machine learns from data, what an LLM, a token and RAG are, why AI sometimes makes things up, and where it stands today — explained with everyday examples, no code and no maths. Free.

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1

Guided lab

Real VM with the 24 € Pro unlock

3h

Of content

Labs + practice + exams + simulations

5

Modules

Progressive difficulty

2–4h

Per lab session

Unlimited restarts

HTKWhat's included
  • The full course: written lessons with diagrams
  • Per-module exams to check what stuck
  • Guided walkthrough of a real phishing email
  • Submit the final assignment
  • Lifetime access, no card required
  • Isolated lab VM and graded certificate: 24 € unlock
0 €

No card required

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Lab tools you will use

LLMsLab toolTokensLab toolEmbeddingsLab toolLLMsLab toolTokensLab toolEmbeddingsLab tool
RAGLab toolAgentsLab toolPython 3Lab toolRAGLab toolAgentsLab toolPython 3Lab tool

Before you start — quick answers

The course is free: every lesson, the module quizzes and the final exam. You need an account, but no card. The paid part is the HTK AI Lab — four hands-on challenges in the browser — which is a 24 € unlock, once.

No. The theory has no code and no formulas: everything is explained with everyday examples. The optional Pro lab uses a little Python, but each challenge comes almost written and explains what to do line by line.

It is an AI course for everyone, written by a cybersecurity academy. That shows in the last module: privacy, deepfakes, prompt injection and how attackers and defenders use AI — things generic AI courses usually skip.

Not yet. Right now it is written lessons with diagrams, quizzes and a final exam. Videos will be added as they are recorded.

Course Syllabus

5 modules · 3h of content

Each phase maps to a module in this course. Scroll to see how the curriculum builds, module by module.

1

Module 1

Introductory

What AI is

  • •AI, machine learning and deep learning: the nesting dolls
  • •From Turing to ChatGPT: 70 years in 10 minutes
  • •Narrow AI, general AI and what AI is not
  • •Module quiz
2

Module 2

Introductory

How a machine learns

  • •Learning means finding patterns in data
  • •Training and using a model: two very different moments
  • •Neural networks without a single formula
  • •Bias comes from the data
  • •Module quiz
3

Module 3

Introductory

LLMs and generative AI

  • •What an LLM is: the world's biggest autocomplete
  • •Tokens: the pieces an AI speaks in
  • •The context window: working memory
  • •Hallucinations: when AI makes it up with confidence
  • •How to ask: prompts that work
  • •Module quiz
4

Module 4

Introductory

RAG and agents

  • •Why an LLM knows nothing about your company
  • •Embeddings: searching by meaning, not by words
  • •RAG step by step: index, retrieve, generate
  • •Agents: when AI stops just talking
  • •Module quiz
5

Module 5

Introductory

AI today

  • •Today's landscape: who's who in AI
  • •Infrastructure: GPUs, data centres and energy
  • •Privacy and responsible use
  • •Prompt injection and AI in cybersecurity
  • •Pro: the HTK AI Lab, build a mini-RAG
  • •Final exam

What you will learn

  • Explain the difference between AI, machine learning and deep learning
  • Understand how a model learns from data and why it inherits its biases
  • Know what an LLM, a token and the context window are, and why models hallucinate
  • Write prompts that get useful answers
  • Explain how RAG and embeddings let an AI answer with your own documents
  • Recognise the security risks of AI, from data leaks to prompt injection

Hands-on Lab

Every module ends with a short quiz and the course closes with a final exam. The Pro unlock adds the HTK AI Lab: four challenges you solve in the browser, where you build in miniature a tokenizer, cosine similarity between embeddings, the retrieval step of a RAG and a prompt-injection detector. No previous Python needed: each challenge comes almost written.

1⬡ 1 guided lab
2–4hSession window
UnlimitedRestarts
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Requirements

  • ·No technical background — no code and no maths
  • ·A computer or phone with a browser
  • ·Around three hours

What's free, and what the 24 € unlock adds

Said plainly here so nothing surprises you halfway through the course.

Free, with an account

  • ✓Every lesson and module in writing, plus the first video of each module
  • ✓Per-module exams, with unlimited retries
  • ✓The guided analysis walkthroughs
  • ✓You can submit the final assignment

Pro unlock

24 €
  • +The HTK AI Lab: four challenges in the browser where you build a tokenizer, cosine similarity, the retrieval step of a RAG and a prompt-injection detector
  • +Automatic tests that check your code in each challenge
  • +Every video lesson of the course as soon as it is recorded
  • +The HTK certificate, which requires completing every lesson, the AI Lab included

One payment, no subscription. The unlock is per free course: this one covers this course only, so you pay for the course you are actually taking. And if you later buy any paid HTK course — Beginner (119 €), Intermediate (159 €) or a complete Learning Path (199 €) — all five unlocks come included, one for each free course: 120 € of value at no extra cost. You never pay twice for the same thing.

Frequently Asked Questions

Complete answers about this course, labs, certificates, and refunds

The course is free: every lesson, the module quizzes and the final exam. You need an account, but no card. The paid part is the HTK AI Lab — four hands-on challenges in the browser — which is a 24 € unlock, once.

No. The theory has no code and no formulas: everything is explained with everyday examples. The optional Pro lab uses a little Python, but each challenge comes almost written and explains what to do line by line.

It is an AI course for everyone, written by a cybersecurity academy. That shows in the last module: privacy, deepfakes, prompt injection and how attackers and defenders use AI — things generic AI courses usually skip.

Not yet. Right now it is written lessons with diagrams, quizzes and a final exam. Videos will be added as they are recorded.

The certificate requires completing every lesson of the course, including the HTK AI Lab, which is part of the 24 € unlock.

No. Any paid HTK course purchase includes the Pro unlock of every free course.

After this course

Then pick the specialism that fits you

This course exists to help you choose with some basis instead of guessing. Once you know which side of the field appeals to you, each learning path takes you from beginner to intermediate with the labs to match.

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