In it he talks a lot about extending your English vocabulary by learning the Latin roots to words, and I've been using the basic idea to create mind maps for the Hanja roots of Korean. I'm sure its been done before.
Here's an example of a page that I would make (using Microsoft OneNote)
As I learn new words I try to fit them onto different mind maps, finding that I can remember new words faster if they are linked to roots or other words that I already know.
OneNote allows me to add hyperlinks to other pages, for example in 자신감
you can click on 신 (body) and be taken to a page where that Hanja character is the root, or you can click on 자 ( for oneself) and be taken to it's page.
It's a work in progress, but I find recording words like this really helps me recall them (or figure out new words). 자신감, for example as "self body feeling" becomes easy to remember as "confidence". I don't actually memorize the Hanjas themselves at this point, but I find I can recognize a few of them.
You don't need OneNote, you could many programs- or just a pencil and paper.
The Hanja in the PDFs here is a good place to start, but I also found this website:
http://hanjadic.bravender.us/%E7%97%85 that is a good searchable Hanja-Korean-English dictionary.
I fid that just making the mind maps teaches me many of these words, but it is also a good way to compile vocabulary lists to study.
Hope someone else finds this approach useful, or can maybe think of a way to improve my system
