Thanks for responding. It's always funny to see the number of people reading the thread, but not responding.
To answer your questions - I don't know yet. Right now, I simply want to learn them so that I can put yet something else down on my resume, feel confident in applying for certain jobs that I would otherwise might not consider applying for. Right now, this is simply about catching up. But in doing so, the question you ask is of course the question that I am asking myself as well.