I've started a new series on CodeFights which goes through the Introduction of the CodeFights Arcade. I go through and explain how to solve the algorithms using JavaScript (ES6). This content is really great for preparing for any kind of programming interview. If you'd like to sign up for CodeFights (It's FREE!) You can sign up here: https://codefights.com/signup/it5dxvERqmSimjsLg/main