Concerning Bookshelves and the CK I've thus far determined this much. The parts consist of a Static shelf for the frame, PlayerBookShelfContainer for each shelf, PlayerBookshelfTrigger,and PlayerBookShelfClickTrigger also for each shelf, not to mention DefaultBookShelfBookMarker x18 for each shelf. Placement of the triggers has been my issue. Once you add them to the render window they seem to dissapear. Hopefully someone will upload a tutorial on this soon. There may be other parts to the bookshelf that I missed thats just what I found when looking at the ones in breezehome.