Crockford did a series of excellent conference presentations after the book was released. Google shared one of his presentations on YouTube where he goes over many of the book's main points.
The Good Parts explains various object patterns you can use to build applications. From the Object Literal to various functional patterns, he reviews them all.
If you are a front-end web or Nodejs developer then you should have a copy of this book. Plan on reading it at least twice. I at least review the content once a year just to refresh my mind, even though the core concepts are just part of my natural programming style.