What you'll learn
A friendly, hands-on course that takes the internet from "invisible magic I'm scared to touch" to "I can map my own network, read an IP address, run diagnostic commands, and watch real packets fly." It's built for total beginners — no prior networking, coding, or command-line experience assumed. Every idea is anchored to something you already understand, starting with the post-office mental model: an address, a message, an envelope, and a carrier.
Across 50 bite-sized lessons you'll build one growing artifact — your Internet Trip Map. You add to it every section: a napkin sketch of your devices, your real MAC and IP addresses, your gateway, a DNS swap, a traceroute across the planet, and finally a labeled Wireshark capture. By the capstone it's a complete, personal picture of how your data reaches the world.
How the course is organized
Thirteen sections, grouped as four parts plus a capstone:
- The Ground Floor (Sections 1–3) — what a network is, the physical cables/plugs/airwaves you can touch, and MAC addresses that identify each device.
- Life Inside Your Castle (Sections 4–6) — IP addresses, the router as the boss (NAT, ports), and leaving home through the default gateway, ending in your first
ping.
- The Open Road (Sections 7–9) — DNS the internet's phonebook, routing and
traceroute to see every hop, and the TCP/UDP handshake (watched live in Wireshark).
- Peeking Inside the Envelope (Sections 10–12) — the OSI model made painless, HTTP/HTTPS web traffic unmasked, and a calm troubleshooting + basic-security checklist.
- Capstone (Section 13) — a solo final project where you assemble everything into your finished Internet Trip Map and explain what happens when you load a website.
Who this is for
Curious non-technical people, new IT/help-desk folks, students, and anyone who has never thought about what happens after they hit Enter. If you've only ever "plugged it in and hoped," this is your on-ramp — it starts from first principles and never assumes you've seen a command line before.
Format
Bite-sized and active: ~15–25 minutes per lesson, every one ending with you doing something. You'll run real tools on your own machine — ping, traceroute/tracert, nslookup, and ipconfig — and install one free tool, Wireshark, late in the course to capture and read live packets. The only prerequisites are a computer, a home router you can look at, and a willingness to type a few safe commands and sketch a diagram or two.
