Adobe Premiere CS6 improvements and non-linear video editing

I would like to know more about the software Premiere. How many cameras angles are allowed in CS6 for video editing? What are the additional options provided by their trimming? What do you mean by dynamic trimming? What do you mean by clip markers? What are its ability in video editing? What is keyboard driven workflow? How beneficial it is than before? Is there any shortcut to stop the playing of the edited clips? What are the buttons I can use for it and what are the keyboard shortcuts we can use for it?

Thank You!