I am very passionate about keeping this computer in great shape, and want it to run at its best for a very long time! Here are a couple of questions I would like help with... 1) In terms of the battery, right out of the box, I charged it all the way, then let it go all the way down to almost zero, then did the exact same thing again because I've heard that helps with the battery's "memory"...Do I need to be careful about how I charge/use the battery to keep it working at maximum efficiency? Should I always let it run down before I charge it? Let it charge up all the way before I unplug it? Etc. Or does it not matter after the first few times? 2) My last computer, I just left on all the time and whenever I wasn't using it I would just shut it, which would put it to "sleep"...What is the best regiment to get on for my computer in terms of "shutting it down" or putting it to "Sleep"...Should I shut it down every night when I go to bed? Or is putting the computer to "sleep" (i.e. just closing the top) good enough? 3) I will be carrying my laptop in my bookbag to class...Is one of those "sleeve" cases good enough protection to keep the case from cracking like I've seen so many people have problems with? What is the best way to minimize that risk? 4) Also, is there any way to password protect files/folders/applications? 5) Is there any way to password protect the log-in, where any time my computer is turned on a password is necessary to get to the desktop? THANKS!