I feel I owe you some additional information that could help you learn and apply the design thinking methodology.
First, I didn’t intend to introduce to much of a “theory” during classes, but focus on your first hand experience of design thinking process instead. Yet, you certainly can learn more about this approach. I recommend you sources produced by either Stanford d.school (http://dschool.stanford.edu/) or Ideo (a design company, https://www.ideo.com/), who has actually popularized this approach. Good reads (among many others) are these:
(Some of you may be also interested in the fact that d.school has also its ramification in Europe – in Potsdam: http://hpi.de/school-of-design-thinking.html).
You can also learn more about the business model generation from the most popular book:
http://www.businessmodelgeneration.com/book. Recently, this perspective was developed to the value proposition design (https://strategyzer.com/books/value-proposition-design), which is also worth your attention.
You can also check or follow these organizations (and people like Alex Osterwalder, the author of the business model generation approach) on Twitter, or elsewhere on the internet (they are quite active there).
Second, I might have not stressed it strongly enough, but the basic structure of the design thinking process, which is going from empathising with users through ideation to prototyping and testing, is very generic. It means that you can find it in many popular approach of innovation design and new product development, like: user-centred design, user experience design, lean start-up, living lab, etc. If you happen to work in this field (which is expanding rapidly right now), you probably will be able to use what you learnt during this course.
However, the orthodox version of design thinking is used rather rarely as in practise this methodology is usually adjusted to the conditions in which a given company operates. For example, quite often a version of a product already exists, time, money and other resources are limited, executives are not convinced by this approach etc. You learn more about it from the case studies presenting real-world applications of design thinking (http://thisisdesignthinking.net/category/cases/ – we used two of them during our classes). However, as I wrote above, the basis of this framework are very universal, flexible and can be applied in many areas which explains the popularity of these approach.
All the best,