updated free-programming-books-en.md (#9116)

* updated free-programming-books-en.md

* updated free-programming-books-en.md

* updated free-programming-books-langs.md

* updated free-programming-books-langs.md

* updated free-programming-books-langs.md

* updated free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

* Update books/free-programming-books-langs.md

Co-authored-by: Eric Hellman <eric@hellman.net>

books/free-programming-books-langs.md

@@ -515,6 +515,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [C++ Programming](https://en.wikibooks.org/wiki/C%2B%2B_Programming) - Panic, et al.
 * [C++ Succinctly, Syncfusion](https://www.syncfusion.com/resources/techportal/ebooks/cplusplus) (PDF, Kindle) (email address *requested*, not required)
 * [C++ Tricks](http://www.bordoon.com/cplusplus/book_wrapper.html)
+* [C++ Tutorial](https://www.cprogramming.com/tutorial/c++-tutorial.html) - Alex Allain
 * [CS106X Programming Abstractions in C++](http://web.stanford.edu/class/cs106x/)
 * [Elements of Programming](http://elementsofprogramming.com) - Alexander Stepanov, Paul McJones (PDF)
 * [Essential C++](https://www.programming-books.io/essential/cpp/) - Krzysztof Kowalczyk, StackOverflow Contributors
@@ -1136,6 +1137,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [JavaScript Spessore](https://web.archive.org/web/20160325064800/https://leanpub.com/javascript-spessore/read) - Reginald Braithwaite (HTML)
 * [JavaScript Succinctly](https://www.syncfusion.com/resources/techportal/ebooks/javascript) - Cody Lindley (PDF, Kindle; email address *requested*, not required)
 * [JavaScript the Right Way](https://github.com/braziljs/js-the-right-way) - William Oliveira, Allan Esquina (HTML)
+* [Javascript Tutorial](https://www.tutorialspoint.com/javascript/index.htm)
 * [JavaScript Wikibook](https://en.wikibooks.org/wiki/JavaScript) - Wikibooks (HTML, PDF)
 * [jQuery Fundamentals](http://jqfundamentals.com) - Bocoup (HTML)
 * [JS Robots](https://web.archive.org/web/20201029045339/http://markdaggett.com/images/ExpertJavaScript-ch6.pdf) - Mark Daggett (PDF) *(:card_file_box: archived)*