Update free-programming-books-langs.md (#10858)

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

* Update free-programming-books-langs.md

books/free-programming-books-langs.md

@@ -2013,6 +2013,7 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Pro Python Advanced coding techniques and tools](https://archive.org/download/python-books/Apress.Pro.Python.Advanced.Coding.Techniques.And.Tools.Jun.2010.ISBN.1430227575.pdf) - Marty Alchin (PDF)
 * [Problem Solving with Algorithms and Data Structures using Python](https://runestone.academy/runestone/books/published/pythonds3/index.html) - Bradley N. Miller, David L. Ranum (3.x)
 * [Program Arcade Games With Python And Pygame](http://programarcadegames.com) (3.3)
+* [Programming Basics with Python](https://python-book.softuni.org) - Svetlin Nakov & Team
 * [Programming Computer Vision with Python](http://programmingcomputervision.com/downloads/ProgrammingComputerVision_CCdraft.pdf) (PDF)
 * [Programming for Non-Programmers, Release 2.6.2](https://web.archive.org/web/20180921063136/http://buildingskills.itmaybeahack.com/book/programming-2.6/latex/ProgrammingforNon-Programmers.pdf) - Steven F. Lott (PDF) (2.6) *(:card_file_box: archived)*
 * [PySDR: A Guide to SDR and DSP using Python](https://pysdr.org) - Marc Lichtman (3.x)