How to get the most out of Natalie Hamilton' "The Kanji Code"?

I don’t have the book but I saw the article. If you haven’t seen it already, there is a pretty amazing user script called Keisei semantic-phonetic composition that utilizes this concept.

It doesn’t give as much detail as the book, but it points out in each kanji the phonetic and semantic component (when they are present/known) that makes up the kanji, and this has made my life at least 30% easier.