Three total newbie questions (try not to laugh) 1) how do I view what's on my SD card?? And how do I even put things there in the first place? 2) I see all this talk about app killers (pro/con) but I don't know if there is a way to actually close apps properly. Is there? 3) if I download something form the internet (like say a menu from a restaurant) how do I go and find that later??