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)