Learn how the Internet works
This series of videos walks through how the internet works. I start with the simple question of how to send digital information over a wire (for a deeper look, see the first video in this series).
From there, the videos walk though a layer at a time, explaining what problem each layer solves and how it contributes to the final result: Reliable end-to-end communication between two computers anywhere in the world.
My hope is that these videos will leave you with a fundamental understanding of the most important principles underlying internet technology.