content(resources): add content to lang intro pages

src/content/resources/cpp/intro.md

@@ -5,6 +5,29 @@ created_at: 2019/12/15
 title: C++
 ---
 
-## C++
+## Beginner
 
-The C++ resources ^\_-
+- [Get started](https://isocpp.org/get-started)
+- [Learn C++](http://www.learncpp.com/)
+- [C++ tutorial](http://www.cplusplus.com/doc/tutorial/)
+
+## Documentation
+
+- [C++ reference](http://en.cppreference.com/w/)
+- [https://isocpp.org/std/the-standard](https://isocpp.org/std/the-standard)
+- [http://eel.is/c++draft/](http://eel.is/c++draft/)
+
+## Books
+
+- [The definitive C books](https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list/388282#388282)
+
+## Video
+
+- [TPH Picks](https://goo.gl/emLpwP)
+- [Cherno](https://www.youtube.com/playlist?list=PLlrATfBNZ98dudnM48yfGUldqGD0S4FFb)
+
+## Other
+
+- [Super FAQ](https://isocpp.org/wiki/faq)
+- [Compilers](http://www.stroustrup.com/compilers.html)
+- [Design guidelines](https://github.com/isocpp/CppCoreGuidelines)

src/content/resources/java/intro.md

@@ -5,6 +5,31 @@ created_at: 2019/12/15
 title: Java
 ---
 
-## Java
+## Documentation
 
-The Java resources ^\_-
+- [Java docs](https://docs.oracle.com/en/java/javase/11/)
+
+## Free Books
+
+- [https://goo.gl/WZTC9C](https://goo.gl/WZTC9C)
+
+## Video
+
+- [EJ Media](https://goo.gl/tC1KwC)
+- [Derek Banas](https://goo.gl/9eVFkE)
+- [Free With Registration | Cave of Programming](https://goo.gl/NXTo4H)
+
+## Guides
+
+- [Learn By Examples | Beginnersbook.com](https://goo.gl/3nDWeQ)
+
+## Useful Repositories
+
+- [Frameworks](https://goo.gl/EoLvrH)
+- [Design patterns](https://goo.gl/wT7SfQ)
+
+## Other
+
+- [History of Java](https://en.wikipedia.org/wiki/Java_version_history)
+- [Wikibooks](https://en.wikibooks.org/wiki/Java_Programming/History)
+- [Timeline](https://oracle.com.edgesuite.net/timeline/java/)

src/content/resources/javascript/intro.md

@@ -5,6 +5,29 @@ created_at: 2019/12/15
 title: Javascript
 ---
 
-## Javascript
+## Documentation
 
-The Javascript resources ^\_-
+- [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
+- [jQuery](https://contribute.jquery.org/documentation/)
+- [NodeJS](https://nodejs.org/en/docs/)
+- [Typescript](https://www.typescriptlang.org/docs/home.html)
+- [Discord.js](https://discord.js.org/#/docs/main/stable/general/welcome)
+
+## Tutorials
+
+- [Eloquent](https://eloquentjavascript.net/)
+- [You Don't Know JS](https://github.com/getify/You-Dont-Know-JS)
+- [MDN](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/First_steps)
+- [Modern JS](https://javascript.info/)
+- [Evie's Accelerated JS Tutorial](https://evie.gitbook.io/js/)
+
+## Discord.js
+
+- [An Idiot's Guide](https://anidiots.guide/)
+- [Discord.js Guide](https://discordjs.guide/)
+
+## Other
+
+- [You might not need jQuery](https://youmightnotneedjquery.com/)
+- [You might not need jQuery 2](https://github.com/you-dont-need-x/you-dont-need-jquery)
+- [CodingTrain | tutorials with examples using p5.js](https://www.youtube.com/user/shiffman)

src/content/resources/kotlin/intro.md

@@ -5,6 +5,17 @@ created_at: 2019/12/15
 title: Kotlin
 ---
 
-## Kotlin
+## About
 
-The Kotlin resources ^\_-
+One line language description: Kotlin is a general-purpose programming language that can run on a JVM or be transpiled to Javascript code. It can use functional, procedural, and OO paradigms, and can interleave them. Primarily developed by JetBrains.
+
+## Links
+
+- [Official Website](https://www.kotlinlang.org/)
+- [Official Docs](https://kotlinlang.org/docs/reference/)
+- [Tutorials](https://kotlinlang.org/docs/tutorials/)
+- [Mooc (not free)](https://www.udemy.com/kotlin-course/)
+
+## Recommended reading
+
+- Kotlin in Action by Dmitry Jemerov and Svetlana Isakova

src/content/resources/php/intro.md

@@ -5,6 +5,15 @@ created_at: 2019/12/15
 title: PHP
 ---
 
-## PHP
+## Useful links and documentation
 
-The PHP resources ^\_-
+- [Official documentation](https://secure.php.net/manual/en/)
+- [Laracasts PHP tutorials](http://laracasts.com/)
+- [PHP: The Right Way](https://phptherightway.com/)
+- [PHP Standard Recommendations](https://www.php-fig.org/psr/)
+- [OWASP Cheatsheet](https://cheatsheetseries.owasp.org/)
+
+## Useful Libraries
+
+- [Composer package manager](https://getcomposer.org/)
+- [phpDocumentor](https://www.phpdoc.org/)

src/content/resources/python/intro.md

@@ -5,6 +5,31 @@ created_at: 2019/12/15
 title: Python
 ---
 
-## Python
+## Beginner
 
-The Python resources ^\_-
+- [Official tutorial](https://docs.python.org/3/tutorial/)
+- [Automate the boring stuff](https://automatetheboringstuff.com/)
+- [Beginner's guide](https://wiki.python.org/moin/BeginnersGuide/NonProgrammers)
+
+## Documentation
+
+- [https://docs.python.org/3/](https://docs.python.org/3/)
+- [https://www.python.org/dev/](https://www.python.org/dev/)
+
+## Video
+
+- [Socratica](https://goo.gl/8xKVKE)
+- [thenewboston](https://goo.gl/9EqF2J)
+
+## Books
+
+- [Free](https://goo.gl/Lxhp7i)
+- [Python Crash Course - paid](https://goo.gl/XQ7Nx6)
+- [Advanced - paid](https://wiki.python.org/moin/AdvancedBooks)
+
+## Other
+
+- [TalkPython | Podcast](https://goo.gl/xwieUA)
+- [Exercises](http://www.practicepython.org/)
+- [List Comprehensions](https://www.programiz.com/python-programming/list-comprehension)
+- [More Resources](https://goo.gl/Lw3Vqi)