$ sudo su
$ sudo apt-get install tool_name
$ sudo autoremove tool_name
$ sudo apt-get upgrade
$ sudo adduser username

ETHICAL HACKING
https://www.youtube.com/watch?v=xOHKc9oxCdA&list=PLLOxZwkBK52ASKvoQSZxyj4NbdbLlpwaJ

VI EDITOR BASICS IN LINUX / UNIX || LEARN VI EDITOR COMMANDS || LINUX || UNIX
https://www.youtube.com/watch?v=pCxej5EPID8&t=38s

PYTHON PROGRAMMING IN TELUGU
https://www.youtube.com/playlist?list=PLLOxZwkBK52Dx82C8mJXB0jhekCBQ5dLo

PYTHON PROGRAMMING FOR BEGINNERS (ENGLISH)
https://www.youtube.com/playlist?list=PLLOxZwkBK52DmuHRO3UNpqAzDF57FtIxk

C PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52AE9jFVOGZTJxaiAC_xB8Yy

JAVA PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52BaOQCJrVvkc97uzeMsx9TT

C++ PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52Ad3zogUDbxIVGo-rgx4Pum

PANDAS LIBRARY – PYTHON PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52A4HLydOr4S5oX-R8Tiy2Rk

MATPLOTLIB LIBRARY – PYTHON PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52BQjsMFcnOB0wjzAUneSNfI

PYTHON DATABASE CONNECTIVITY – MYSQL & MS-EXCEL
https://www.youtube.com/playlist?list=PLLOxZwkBK52CIfeg1YISebeYu2Cfc_6Pl

NUMPY LIBRARY – PYTHON PROGRAMMING
https://www.youtube.com/playlist?list=PLLOxZwkBK52BS9QmfiuJAGSoVikI5-1hN