Also, anything from Jake Archibald. He explains things so well. Here's two that standout.
These topics might not necessarily be beginner, but a good understanding of these will take you a long way.
20:49 PM - 18 Nov 2017
The jsconf.asia talk is absolutely brilliant and completely changed my perspective my first time watching it.
I posted some front-end resources in a gist a while ago, not all JS, and Some of it's a little out of date, but there's till some good stuff in there though.
The ES6 Katas is really good. If anyone else has some katas, please add them here
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