RoadMap for Drupal FE themer Css https://www.w3schools.com/css/ https://www.youtube.com/playlist?list=PLr6-GrHUlVf8JIgLcu3sHigvQjTw_aC9C Javascript https://www.w3schools.com/js/ https://www.youtube.com/playlist?list=PLsyeobzWxl7qtP8Lo9TReqUMkiOp446cV jQuery https://www.youtube.com/playlist?list=PL6n9fhu94yhVDV697uvHpavA3K_eWGQap Modular jQuery https://www.youtube.com/playlist?list=PLoYCgNOIyGABs-wDaaxChu82q_xQgUb4f Sass https://www.youtube.com/playlist?list=PLxpdCgKRilIEh0s3KufX1_INtlruRwguH https://sass-lang.com/guide Patternlab https://patternlab.io/ https://www.youtube.com/watch?v=F0O3EaAFIqs&t=4s Responsive web https://zellwk.com/blog/how-to-write-mobile-first-css/ Build tool (gulp) https://www.youtube.com/playlist?list=PLLnpHn493BHE2RsdyUNpbiVn-cfuV7Fos Best Practices https://cssguidelin.es/ https://sass-guidelin.es/ https://benfrain.com/the-ten-commandments-of-sane-style-sheets/ https://www.drupal.org/docs/develop/standards/css/css-architecture-for-drupal-8 https://css-tric