You use it all day and cannot explain it
It feels odd to rely on something so completely without knowing how it works.
Courses
Start with three things you can do today
How does the internet work, explained simply
Follow a web page from your screen to a server and back.
A course on how the internet works for curious non-engineers. It covers Wi-Fi and your router, IP addresses and packets, how website names are looked up, what a server does, what the padlock in your browser means, and why connections slow down.
Type this when Cadence asks what you want to learn
I use the internet all day but I have no idea how it actually works. I want to understand what happens between typing a website address and the page appearing, including Wi-Fi, routers and why things slow down.
Change any word so it fits your situation. The course is built from what you type and a few setup questions.
Start today
Four things you can do before the course exists.
Useful on their own. The course is for when you want the whole skill, not just the first move.
-
Follow one page request
When you type a web address, your device usually asks a DNS server to turn the name into a numeric IP address. It then sends a request to that address, split into small packets that routers pass along, sometimes by different routes. The server's reply travels back the same way and your browser reassembles it into the page.
-
Tell a Wi-Fi problem from an internet problem
If one site is slow but others are fine, the problem is probably that site. If everything is slow on Wi-Fi but fast on a cable or right next to the router, the Wi-Fi link is the likely issue. If everything is slow on every device, check with your provider.
-
Read the padlock correctly
The padlock and https in the address bar mean data between you and the site is encrypted on the way. They do not show that the site is honest or the one you meant to visit. Check the spelling of the domain before entering a password or card number.
-
Know the two speed numbers
Bandwidth is how much data can flow per second, like the width of a pipe. Latency is the delay for a round trip, like the length of the pipe. A big download mostly needs bandwidth; a video call or online game is far more sensitive to latency than a download is.
- Best for
- AI & technology
- Prerequisites
- None. Bring the situation you have.
- Course length
- 7 to 30 lessons, sized to your goal
- Lesson pace
- About 10 minutes a day
- Format
- Read it, or play the audio
- Access
- Available on the App Store, with early features and Android testing access
Before the course is built
Setup asks about your situation first.
Lesson 1 opens on the moment you describe, and the examples use your role. For this request, expect questions like these.
- What made you curious: slow Wi-Fi at home, the news, work, or plain curiosity?
- How do you mostly connect: home Wi-Fi, mobile data, or a work network?
- Is there a term you hear often but cannot explain, such as IP address, router or the cloud?
Right for now
If any of this sounds familiar, start here.
Your home Wi-Fi is a mystery
When it slows down, restarting the router is your only move.
Tech conversations lose you
IP, DNS and bandwidth fly past in meetings.
Course arc
Where the course goes, in order.
Cadence writes the lessons for you, so the exact path follows your answers. This is the ground a course built from this sentence covers.
01 / 06A network of networks
How separate networks agree to pass traffic between them.
Addresses and packets
IP addresses and why data travels in small pieces.
Names to numbers
How DNS turns a website name into a numeric address.
Your home connection
Wi-Fi, the router and the line to your provider.
Servers and the cloud
What answers your request and where it physically lives.
Speed and security
Bandwidth, latency, HTTPS and what each means for you.
What changes
What you will be able to do, and what you will stop believing.
You will be able to
Trace a page load
Explain the steps from typing an address to seeing the page.
Understand your home setup
Know what your router, your Wi-Fi and your internet provider each do.
Read the basics of security
Know what the padlock and HTTPS do and do not tell you.
Ideas this course corrects
Wi-Fi and the internet are the same thing
Wi-Fi is the short-range radio link to your router. The internet is the wider set of networks your router reaches through your provider.
The padlock means a site is trustworthy
HTTPS means the connection is encrypted. A scam site can have a padlock too, so it says nothing about who runs the site.
Course questions
What to know before you start.
How does the internet work, explained simply: what can I do today?
Follow one page request. When you type a web address, your device usually asks a DNS server to turn the name into a numeric IP address. It then sends a request to that address, split into small packets that routers pass along, sometimes by different routes. The server's reply travels back the same way and your browser reassembles it into the page. Tell a Wi-Fi problem from an internet problem. If one site is slow but others are fine, the problem is probably that site. If everything is slow on Wi-Fi but fast on a cable or right next to the router, the Wi-Fi link is the likely issue. If everything is slow on every device, check with your provider. Read the padlock correctly. The padlock and https in the address bar mean data between you and the site is encrypted on the way. They do not show that the site is honest or the one you meant to visit. Check the spelling of the domain before entering a password or card number. Know the two speed numbers. Bandwidth is how much data can flow per second, like the width of a pipe. Latency is the delay for a round trip, like the length of the pipe. A big download mostly needs bandwidth; a video call or online game is far more sensitive to latency than a download is.
Is this a fixed course?
No. Cadence builds the course when you type the sentence and answer a few setup questions, so the lessons follow your situation. This page describes what a course built from this request covers. You see the whole path before Lesson 1.
Who is this course for?
A course on how the internet works for curious non-engineers. It covers Wi-Fi and your router, IP addresses and packets, how website names are looked up, what a server does, what the padlock in your browser means, and why connections slow down. It sits under AI & technology in the Work & ambitions part of the library.
Do I need any prior experience?
No. Setup asks what you already know and where you want to use it, and the course starts from there. Bring a real situation if you have one; the examples are built around it.
How long does it take?
Courses run 7 to 30 lessons of about 10 minutes, sized to what you asked for. One lesson a day is the intended pace, and you can go faster. Lessons can be read or played as audio.
Does this course award a certificate or degree?
No. Cadence is for practical self-learning and does not award accredited degrees or professional certification.
Start today
Type it, answer a few questions, open Lesson 1.
The sentence to type
I use the internet all day but I have no idea how it actually works. I want to understand what happens between typing a website address and the page appearing, including Wi-Fi, routers and why things slow down.