I have the same question. Mike Griffiths book is organised in various domains, while in Agile Prep cast the lessons are spread out and not part of any domain.
Hence it is difficult to study both together in the case one needs to learn a particular concept from both the resources, the Prep cast and Mike Griffiths book.
Allow me to ask a question in return: What are you trying to determine by asking that question? (I'm asking this to try and understand what you are looking for, so that I can give you the right answer.)
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