Just like a good Sommelier can recommend a good wine to complement a good meal, there are many books that pair very well with online courses. Here are some pairings that I have found work well. If you have your own recommendations, please let everyone know via the comments.
I am developing this post so that pairs at a more granular level. Books and courses describe many different concepts, and sometimes we just need to learn one concept quickly.
|1 Good Parts||–|
|4 Functions||Background on Functions|
|5 Inheritance||Prototypal Inheritance|
|7 Regular Expressions||–|
|9 Style||The Way We Think|
|Scope and Closures||
|Types and Grammar|
All of the above course links are currently Pluralsight or Front End Masters courses, but with your help I would very much like to add some examples from other online training sites, as well as the best You Tube videos.