Some examples off the top of my head:
RegEx: Regular Expressions: Restrict Possible Usernames - You have to use a quantity specifier, but that is not covered until a later section.
Regular Expressions: Specify Upper and Lower Number of Matches - Confusing instructions on this one if you are new to RegEx. The example is a one word example, challenge is two words, so including the “no” portion is not obvious. Found other people bringing this up via Google searches.
ES6: All of the destructing exercises. The examples are so far off what is asked to do. Most likely a beginner is not going to want to wrestle with length being a property of String when the example is a generic object.
I found myself having to google many of the topics(probably 1/2) because the explanation was so confusing. Some of the concepts are rather basic, which makes it particularly annoying that I’m spinning my wheels trying to battle through how the material is presented and tested vs learning. I would usually find the answer from github where other users have brought it up, or from secondary learning sources.
I’m going to do RegEx through regexone or regular-expresions.info. I did ES6 through other avenues prior and understood it without issues, doing examples, etc.