Hi all First, I have general questions about laptop batteries, particularly the Powerbook aluminum g4: 1) I mostly use my powerbook at home and don't plan on taking it around with me yet. Should I run the machine on the adapter all the time? Or Is it better to keep charging the battery all the way and use up all the power, then charge it all the way again? 2) Can I use up part of the battery and then plug in the power at anytime, or will this harm my battery? 3) What is the prescribed way to "use" the powerbook, in terms of power and shutting down? I heard you should just put it to sleep when you're not using it (like when you're going to sleep at night). Should you leave it on 24 hours a day? 4) Any general tips on battery care? Next, about Applecare: I am also a first time Apple and Laptop owner. Is it worth it to get the additional Applecare? I heard that laptops (hardware) will start to get clunky after the first year and having your laptop repaired (apple, especially) can be VERY expensive. I am interested in getting Apple care, BUT I am also leaving the United States at the end of the year (which also happens to be the end of the 1 year warranty for my powerbook) and relocate to Asia. Will Applecare cover my powerbook when I leave the US? What happens at the end of the 2 year extended warranty? Thanks, I hope someone can enlighten me on these issues.