Learning Path
Dark Web Fundamentals Path
The dark web is one of the most talked-about and least understood parts of the internet. Headlines swing between horror stories and hype, and most of them are wrong in interesting ways. This path replaces the folklore with facts: what the dark web is, how it differs from the deep web, how Tor actually works, what the law says, and what can and cannot be hidden.
How this path works. Each lesson below is a short summary written for this path, with a link to the full guide. Work through them in order, mark each one complete when you have read the guide, and test yourself with the quiz at the end. Your progress is stored only in your own browser — no account, nothing sent to us. This path teaches understanding, not credentials: completing it does not give you a certificate and does not qualify you for a job.
What you will learn
This path is for anyone who has heard the term dark web and wants the truth behind it. It assumes no technical background, and it does not teach you how to visit anything — it teaches you how to understand what you read about it.
- Explain the difference between the surface web, the deep web and the dark web without repeating the common myths.
- Describe how Tor routes a connection, and what each relay in the circuit can and cannot see.
- Say plainly whether visiting the dark web is illegal — and why the answer depends on where you are and what you do.
- Judge whether a dark web claim in the news is documented fact or folklore.
- Know the real limits of Tor: what it hides, what it does not, and why it never guarantees anonymity.
Your progress
0 of 7 lessons complete.
The lessons
Read each lesson summary, then open the full guide it links to. The summaries are written for this path — they do not repeat the guides, they prepare you for them.
Lesson 1: What is the dark web?
The dark web is the small part of the internet made of sites that need special software — usually Tor Browser — to reach. It is not a separate internet, and it is not a place in the physical sense: it is a set of websites whose addresses end in .onion and which live on top of the Tor network. Most of what is said about it in headlines is either exaggerated or simply wrong, so this lesson starts by clearing the ground.
You will learn what actually lives on the dark web — a mix of the ordinary, the secretive and the criminal, in proportions nobody can honestly measure — and why the famous iceberg image is misleading. You will also learn what this site will never do: it will not list dark web addresses, link to them, or describe how to find illegal content. Understanding the dark web is a legitimate subject; using it to break the law is not, and the two are kept firmly apart throughout this path.
Read the full guide: What is the dark web?
Lesson 2: Deep web vs dark web: the difference
The single most common confusion about this subject is between the deep web and the dark web, and it is worth clearing up early because almost every wrong claim flows from it. The deep web is everything search engines do not index: your email, your online banking, a paywalled newspaper, a private company database. It is enormous, mostly ordinary, and you use it every day without noticing.
The dark web is a small part of the deep web: the part that needs special software to reach. This lesson shows what lives where, with everyday examples, and explains why the famous percentages — the claim that the deep web is 90 or 95 percent of the internet — have no current basis. They trace back to a 2001 estimate that was never a measurement, and this site will not repeat them as fact. Once you see the difference clearly, most dark web headlines start to look much less mysterious.
Read the full guide: Deep web vs dark web
Lesson 3: How Tor works
Tor is a free network run by volunteers that routes your connection through three relays before it reaches its destination. Each relay knows only the step before and the step after it, so no single relay knows both who you are and where you are going. The guard relay sees your address but not your destination; the middle relay sees neither; the exit relay sees the destination but not your address. That separation of knowledge is the whole idea.
This lesson explains the circuit step by step, with the interactive visualizer from our tools, and it is honest about the limits: Tor is slower than a direct connection, some sites block it, and the exit relay can see the traffic it passes on unless the connection is encrypted. It also explains why Tor's strength is a property of the design, not a promise: timing and correlation attacks exist, and Tor never guarantees anonymity. Understanding those limits is part of understanding Tor.
Read the full guide: How does Tor work?
Lesson 4: Onion routing, layer by layer
Onion routing is the technique Tor is built on, and its name is the explanation: your message is wrapped in layers of encryption, like the layers of an onion, and each relay peels off one layer. The first relay removes the outermost layer and learns only where to send the message next; the last relay removes the final layer and delivers the message. No relay ever sees the whole journey.
This lesson peels the onion with you, layer by layer, and explains the two ideas that make it work: layered encryption, so each relay only learns its own step, and the fact that the route is chosen in advance by your Tor software, not by the relays themselves. You will also learn where the name comes from, how onion services (the .onion sites) use the same idea in reverse, and why the technique is conceptually simple even if the engineering behind it is not.
Read the full guide: How onion routing works
Lesson 5: Is the dark web illegal?
The most-asked legal question about this subject has no single answer, because it depends on two things: where you are, and what you do. Visiting the dark web is not, by itself, a crime in most countries — but the things people can do there, such as buying stolen data or illegal goods, are crimes everywhere. This lesson splits the question properly: the technology, the act of visiting, and the activities that happen there are three different questions with three different answers.
You will learn how the law differs by country in broad strokes, why law enforcement focuses on actions rather than on the network itself, and why this site is careful to say this is general information, not legal advice. Laws change, and they differ in detail from place to place — if you ever need a legal answer that applies to you, the only safe source is a qualified lawyer in your own jurisdiction. This lesson teaches you enough to understand the news, not enough to advise anyone.
Read the full guide: Is the dark web illegal?
Lesson 6: Can you be tracked on Tor?
Tor makes tracking harder; it does not make tracking impossible, and this lesson is the honest version of that sentence. It walks through who can see what: your internet provider can see that you are using Tor, but not what you are doing; the website you visit sees the exit relay, not your address; and the exit relay can see the traffic it carries unless the connection uses encryption. Each party sees a piece, and nobody sees the whole picture — but pieces can be combined.
You will learn the main ways people give themselves away on Tor: logging into a personal account, which ties the session to a real identity; downloading a file that phones home outside Tor; and the long-studied risk of timing and correlation attacks, where an observer who can watch both ends of a connection can match them up. The lesson ends with the single most important correction in this whole path: Tor is a tool that raises the cost of tracking, not a cloak that removes it.
Read the full guide: Can you be tracked on Tor?
Lesson 7: Dark web myths, corrected
The dark web attracts myths the way a dark room attracts stories, and this lesson takes the most repeated ones apart, one by one: that it is mostly illegal marketplaces, that it is 95 percent of the internet, that hitman services advertised there are real businesses, that using Tor makes you invisible, and that the dark web is a single place run by a single group. Each myth is stated plainly, then corrected with what is actually documented.
The point of the lesson is not just to correct facts but to teach a skill: how to tell a sourced claim from a repeated one. A claim that appears on ten sites may still trace back to a single 2001 estimate or a single uncorroborated story. You will learn to ask the two questions that puncture most dark web myths — who measured this, and when? — and to be suspicious of any number given without an answer to either.
Read the full guide: Common dark web myths
Try the tools
These free tools let you practise what the lessons describe — everything runs in your browser, and nothing you type is sent anywhere.
- Tor Circuit Visualizer — click each relay to learn what the guard, middle and exit relay can and cannot see
- Who Sees What? Packet Journey — follow one web request and see what each party can see, with HTTPS, VPN and Tor toggles
Check what you learned
Four questions, all based on fictional scenarios. Answer them all, then check your score — each answer explains itself, so a wrong answer teaches as much as a right one.
Answer all four questions, then check your score.
Download your notes
Download a plain-text summary of this path: the lesson list, which lessons you marked complete, and your quiz score. The file is generated on your device — nothing is uploaded.
Key terms in this path
The glossary defines every term this path uses: Tor, onion routing, dark web, deep web. If a lesson uses a word you do not know, look it up there — each term page also explains the idea with an example.
Frequently asked questions
Does this path teach me how to visit the dark web?
No. This path teaches understanding, not access. It explains what the dark web is, how Tor works, and what the law says — it does not link to dark web addresses, describe how to find illegal content, or give step-by-step access instructions beyond the Tor Browser download guidance from the official source, which is covered in the Tor Technology path.
Is the dark web mostly criminals?
Nobody can honestly measure the proportions, and any site that gives you a confident percentage is guessing. What is documented is a mix: whistleblowing and journalism tools, privacy services, discussion forums, and criminal marketplaces all exist there. This path teaches you to treat unsourced proportions as folklore.
If Tor hides my address, why is it not a guarantee of anonymity?
Because anonymity depends on behaviour as well as technology. Logging into a personal account, downloading a file that connects outside Tor, or being watched at both ends of a connection can all identify you. Tor raises the cost of tracking a great deal — it does not remove the possibility.
Can I trust what I read about the dark web in the news?
Treat every dark web claim the way this path teaches: ask who measured it, when, and from what source. Size figures, crime statistics and sensational claims are often repeated from a single old or uncorroborated source. Confirmed, attributed, dated reporting exists — but it is the exception, not the rule.
Should I be worried if my internet provider can see I use Tor?
Your provider can see that you are connecting to Tor, because the guard relay address is visible. In most countries that is not, by itself, a problem — Tor is a legal tool used by journalists, researchers and ordinary people. What matters is what you do with it, not the fact that you use it.