The article "A Study Plan to Cure Javascript Fatigue" ( <a href="https://medium.freecodecamp.com/a-study-plan-to-cure-javascript-fatigue-8ad3a54f2eb1" rel="nofollow">https://medium.freecodecamp.com/a-study-plan-to-cure-javascr...</a> ) is a great place to start. It gives an excellent series of steps for tackling modern Javascript concepts one piece at a time: Javascript, React, ES6, and state management. There's also a "Front-End Study Guide" based on that article that's very good, at <a href="https://github.com/grab/front-end-guide" rel="nofollow">https://github.com/grab/front-end-guide</a> .