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The Odin Project
SS64
From NAND to Tetris
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Slackware Linux
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Petri IT Knowledgebase
Raspberry Pi
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JavaRanch
#! Linux
Structure and Interpretation of Computer Programs
Racket
MIT OpenCourseWare
The Art of Unix Programming
How to Design Programs
Distrowatch
Vagrant
PuPHPet
CodeProject
TrueCrypt
Open Culture
Professor Messer
All Answers
Achievement Unlocked
Docker
BSD vs Linux
pfSense
FreeNAS
Project Gutenburg
NirSoft – freeware utilities
iPXE
Buildroot
BusyBox
Hombrew
BleepingComputer
OpenBooks
mooculus
AMS
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udemy
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LEDE Project
Project Euler
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Undark
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Protectli
LessWrong
Teach Yourself Computer Science
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Portacle
ELECTRON
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Stack Abuse
Hackaday
SciPy.org
MDN Web Docs
Microsoft Azure
Amazon Web Services
The Twelve-Factor App
Ops School Curriculum
TURING PI
linode
Ansible
Metis WiFi
edpresso