I get a book, start a project with a goal, map out things that I know already to concepts in the new framework (Models to Models, etc...). I ask myself what is the same, what is different... I try to separate out language differences from framework differences.

I also try to understand the motivations behind making it, and what they were trying to accomplish as a goal. I have to try to make sure I don't force paradigms from another framework/language on this one.