Computer Science Coach
Identifying and Fixing Errors

Crash Course #4
Binary 

Crash Course #2
Compression

Tom Scott
Why Snow and Confetti Ruin Video Quality

Programming & Math Tutorials
Converting Binary, Decimal, and Hexidecimal

Code.org
Images, Pixels, and RGB

5 Minute Metadata
What is Metadata?

Matt Stopa Dev
How Binary Search Works

Crash Course #28
Computer Networks

Crash Course #29
The Internet

Crash Course #30
The World Wide Web

Code.org
Packets, Routing, and Reliability

Teltonika Networks
TCP and UDP

Code.org
Encryption and Public Keys

Computerphile
Public Key Cryptography