What Will I Learn?
ES6 Easy Wins - New Variables, Scoping and Template Strings
New Language Features — Arrow Functions, Destructuring
New Iterables and Looping over data
What the heck those ...three ...little ...dots actually do
How to structure your JavaScript with Modules and NPM
Advanced Classes, Proxies, Generators, Sets and Maps
How to write clean and consistent JavaScript with ESLint
Proper tooling + bundling setup with Webpack
$60 for things you can learn by reading a free blog post and actually trying it yourself in a side-project?
Unless you've never did any Javascript in your life, in which case you can still learn JS basics in a free tutorial, better than a "learn ES6 best-practices" course.
Seriously, move along.... Go watch the quality of the video/audio and the content of any of @wesbos' free courses. You'll understand why he charges for it and why I happily pay the price he's asking. Yes. I bought ALL his paid courses and they are fantastic.
Unless you've never did any Javascript in your life, in which case you can still learn JS basics in a free tutorial, better than a "learn ES6 best-practices" course.