#Learn Linux https://github.com/cosmicqbit/Learn-Linux ~ https://github.com/nativeit/sysadmin-bootcamp #The Basics https://github.com/facyber/awesome-networking ~ https://github.com/gerryguy311/Free_CyberSecurity_Professional_Development_Resources #IpTables / Firewall https://github.com/trimstray/iptables-essentials ~ https://gist.github.com/rakibulinux/9e24e4996814edd8127de6078242ca67 #Cloud Computing / Cloud engineering https://github.com/lynnlangit/learning-cloud ~ https://github.com/learntocloud/learn-to-cloud # Reversing / Understanding Programming Langs https://github.com/danbev/learning-assembly ~ https://github.com/HACKE-RC/awesome-reversing