Networking

Eli The Computer Guy: https://www.youtube.com/user/elithecomputerguy

Networking white hat tools: https://hakshop.com/

How to do subnetting: http://turfptax.com/wp-content/uploads/2018/05/268147-TURFPTAx-Explains-Subnetting.pdfhttp://turfptax.com/wp-content/uploads/2018/02/268147-TURFPTAx-Explains-Subnetting.pdf

Microsoft Applications

Did you know that a library card in some cities grants you access to Lynda.com for free?!?!

Lynda.com: https://www.lynda.com/

Windows Operating System

 

Linux Operating System

CodeAcademy: https://www.codecademy.com/

Programming

Improve typing speed: https://typing.io/

python: https://automatetheboringstuff.com/

Math/Numbers:

Numberphile: https://www.youtube.com/channel/UCoxcjq-8xIDTYp3uz647V5A

Computer Concepts:

Computerphile: https://www.youtube.com/user/Computerphile

Cryptography:

Khan Academy: https://www.khanacademy.org/computing/computer-science/cryptography
This course is very fun and may be helpful for the puzzle on this site 😀