I just got my first mac today. PowerBook 1.5GHz G4 512MB DDR333 80GB Ultra ATA Super Drive ATI Mobility Radeon 9700 64MB So far I love it. One of the first things I noticed is how simple it is to install things and how organized it keeps everything. I have only used OS X [font="]minimally[/font] in the past but I liked what I saw. I've been a long time Windows user that has dabbled in Linux (loved it...most of the time). So far, OS X is most of the things about Linux I like with a few of the problems fixed. One question I do have, it says in the manual to fully charge the batter first, then use the batter untill it dies. This will calibrate the battery. I have done that (well, am doing that now), but, after that is done, does it really matter when or how long I have it plugged into the wall? Will using the batter and then plugging it in hurt the battery or should I let it run down then charge back up fully a lot?