I can see how it can be overwhelming, as with everything the beginning is the hardest but it will get easier over time. Seeing a ternary the tenth time will be much easier than the first.

I would look for the old-ish articles and tutorials that introduce es6, for example: https://babeljs.io/docs/en/learn/ idk if you need to go earlier, but surely there are tons of articles on each update to the language.

I think it's good to realize most of it is not new, it's largely the same stuff, just slightly different and more convenient.