w3school - SERP Analysis

https://www.w3schools.com/

https://www.reddit.com/r/learnprogramming/comments/1anvnwt/i_think_i_wasted_my_damn_time_on_w3schools/

https://www.codecademy.com/forum_questions/4fd1d78b7e79680003012b95

https://www.youtube.com/%40w3schools

https://en.wikipedia.org/wiki/W3Schools

https://meta.stackoverflow.com/questions/280478/why-not-w3schools-com

https://forum.freecodecamp.org/t/your-thoughts-on-w3schools/196401