So after a whola lotta help from the wonderful CC community (or I guess CCCC community... College Confidential College Computers

), I have ordered my Dell Studio 15!
Now, I need to know how to make it last all five years of college (going to Northeastern with the 5-year co-op program). I'm an Intl Affairs major (potentially) and will be using the laptop for iTunes (musc + movies), Microsoft Word, Internet, and maybe Sims 3.
I have learned a bit about laptop care from the mistakes we've made with family laptops over the years. I now know that leaving a laptop plugged in all the time is the worst thing you can do to a battery and holding a laptop by the screen portion and not the base (when it's fully opened) will indeed loosen and break the hinges.
I am just looking for any advice on how to get the most out of it. Even if something is totally "common sense," you should probably still tell me
And a few ?s:
-How do I get the most out of my battery? It's a 9 cell, just fyi. I heard somewhere that you should let the battery completely lose its charge ~once a month. I just don't want to have issues with the battery/overheating or anything.
-I know I should always use it on a hard surface, so I will make my best effort to always use it at a desk. But will a lap desk also suffice?
-Any special ways to clean the monitor?
Any and all advice is appreciated!