wp_imoortant_source_link

JavaScript Best Practice (Source Link) : https://developer.wordpress.org/themes/advanced-topics/javascript-best-practices/
  Using $ 
  Because the copy of jQuery included in WordPress loads in (link needed) noConflict() mode, use this wrapper code in your theme’s .js files to map “$” to “jQuery”:
    ( function( $ ) {
        // Your code goes here
    } )( jQuery );

UI Best Practices (Source Link) : https://developer.wordpress.org/themes/advanced-topics/ui-best-practices/
  Logo Homepage Link #
  Descriptive Anchor Text #
  Style Links with Underlines #
  Different Link Colors #
  Color Contrast #

Theme Unit Test (Source Link) : https://codex.wordpress.org/Theme_Unit_Test
    Test Environment Setup
    Test Environment Installer Package
  .......