https://www.youtube.com/results?search_query=lotte+new+york
https://www.youtube.com/channel/UCYxsXxbjJO1YYa9yQ3lKC8w/videos

https://www.quora.com/What-are-the-important-recommended-GCC-compiler-flags-to-use-when-learning-C
https://www.quora.com/Is-there-a-shortcut-to-learning-C
https://www.quora.com/What-are-the-important-topics-in-C++-should-one-know-before-taking-part-in-coding-competitions

https://openload.co/f/t79yfrO90I4
https://reactjs.org/docs/hello-world.html