I´m not quite sure if it is really helpful to You guys. Maybe it´s a bit off-topic. So before
I start writing a blog, just let me explain and ask a question:
Since the dawn of DesignStudio I was allways fascinated by the idea of creating my
own extentions. First thing I learned: It´s possible, the possibilities are nearly endless,
but You have to learn a fair amount of D3.js before You can use Your very own extentions
with DS. Comming for the business side of things and beeing an absolute rookie in
JavaScript and D3 I had to start from zero. Now I´m somewhere between 0.1 and 0.2 
I gathered a lot of information from the Websites, blogs, tutorials, ebooks
an printed ones during the last few months and I´m still climbing up the steep learning curve.
Just give me a shout, if You are interested in what I found useful to start with D3.js.
Best
Matthias