adding-new-index-and-course (#10521)

* adding-new-index-and-course

* Update free-programming-books-langs.md

* adding new book

* Adding-New-Urdu-Course

* Update free-courses-ur.md

books/free-programming-books-subjects.md

@@ -647,6 +647,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 * [Bits, Signals, and Packets: An Introduction to Digital Communications and Networks](https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-02-introduction-to-eecs-ii-digital-communication-systems-fall-2012/readings/)
 * [Code Connected vol.1](https://hintjens.wdfiles.com/local--files/main%3Afiles/cc1pe.pdf) (PDF) (book on ZeroMQ)
 * [Computer Networking : Principles, Protocols and Practice](http://cnp3book.info.ucl.ac.be/1st/html/index.html) (HTML, ePub, PDF, Kindle)
+* [Computer Networks](https://kanchiuniv.ac.in/coursematerials/VINODKUMAR_COMPUTER_NETWORKS.pdf) - J.Vinoth kumar (PDF)
 * [Computer Networks: A Systems Approach](https://book.systemsapproach.org) - Larry Peterson, Bruce Davie (HTML, epub, mobi, PDF)
 * [Distributed systems for fun and profit](https://book.mixu.net/distsys/single-page.html)
 * [High-Performance Browser Networking](https://hpbn.co) - Ilya Grigorik

courses/free-courses-ur.md

@@ -3,6 +3,7 @@
 * [C++](#cplusplus)
 * [C#](#csharp)
 * [HTML and CSS](#html-and-css)
+* [Python](#python)
 
 
 ### <a id="cplusplus"></a>C++
@@ -21,6 +22,6 @@
 * [HTML5 & CSS3 Tutorials In Urdu and Hindi](https://youtube.com/playlist?list=PLUyYwyJA_WfTr3YWWJ41_V7TrRZoq6cBT) - ProgramInUrdu
 
 
+### <a id="python"></a>Python
 
-
-
+* [Python_ka_chilla (python in 40 days in urdu/Hindi)](https://www.youtube.com/playlist?list=PL9XvIvvVL50HVsu-Ao8NBr0UJSO8O6lBI) - baba Aammar