Some useful sites

C++ coding guidelines for beginners:-
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https://www3.ntu.edu.sg/home/ehchua/programming/cpp/cp3_OOP.html

Linux and Networking:-
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Linux Kernel Development
Novel by Robert Love
https://doc.lagout.org/operating%20system%20/linux/Linux%20Kernel%20Development%2C%203rd%20Edition.pdf

HYPERLINK "http://rads.stackoverflow.com/amzn/click/0131411551"W. Richard Stevens, Unix Network Programming, Volume 1: The Sockets Networking API

http://www.kohala.com/start/

https://www.cs.stevens.edu/~jschauma/810/

https://scoecomp.files.wordpress.com/2014/02/2003-unix-network-programming-vol-1-3rd-ed.pdf