As a junior developer, I focus on building everyday. I'm taking JavaScript30.com right now, I'm going to start CodeWars.com, and I use CodeAcademy.com and GetMimo.com to brush up on basic concepts. Udacity.com has a free course on building responsive and mobile-first websites. Lastly, Egghead.io is a great resource for short videoes. I also have two web developer mentors whom I rely on for advice on how to become a better coder, to explain key concepts that I'm struggling to understand, and I also rely on online communities when I can't figure something out.