You can find in this website section over 50 WordPress snippets, I have also tutorials, plugins and themes. Because WordPress alone would never work by it self I also cover a few topics about servers and WordPress work-flow (control version github, deploy, gulp, standards).
WordPress code snippets are pieces of code that you add to your website.
You need to be very aware that any additional code you add to theme files will be overwritten if you upgrade your WordPress theme(not applied to custom themes). It is therefore prudent to take a note of any snippets you add to your theme in a separate location. You should also check out the free WordPress plugin Code Snippets, this plugin allows us to insert code directly into your theme functions.php file.
I hope you enjoy the website and all the code available for you to use and please fell free to share your own code.