Here are each of the available series for you to explore:
Laracasts – PHP Advanced
Laracasts knocks it out of the park for modern PHP web development webcasts. Jeffrey Way accelerates your OOP and Testing chops. Although Laravel-centric and WordPress-centric, you can learn a ton from his awesome libraries. Check it out Laracasts – Learn more
CSS to Sass – Treehouse
Guil Hernandez does an excellent job in showing you how to convert a stylesheet from native CSS to Sass. He gives you a simple project and then walks you through the process. Check it out CSS to Sass.
CSS Reference on codrops is my go-to reesource for CSS. Sara Soueidan did an awesome job at detailing out the ins and outs of each construct, attribute, pseudo-class in CSS. Bookmark and use CSS Reference.
Front-end Styling Mastery
Sara Souedian will help you master front-end styling with her insightful and very detailed articles. You need to bookmark and read her stuff often. If you get a chance to go to one her workshops, I highly recommend you drop everything and go. It’s time to go to the next level in styling with Sara. Bookmark this.
Do More in Sass
James Steinbach continues to share his expertise in Sass-y development. He will help you not only learn Sass but to do more with it. Sass helps you to write modular CSS and makes you more efficient. Bookmark this.