Debian Basic
This webpage explains the basics of debian operating system
Debian Shell Comands
This site list the commands available to debian system
Virtualization
This site explains virtualization
Medium Unlimited
This browser extension enable you to read any medium article for free
Shell Basic
This site explain the basic concept of shell such as piping, etc
Regex 101
This site can be used to test and explain your regex
AWK Basic
This site explain how to use the awk command
GREP Basic
This site explain how to use the grep command
SED Basic
This site explain how to use the sed command
Linux Filesystem
This site explain the linux filesystem and how to mount & unmount devices