Just bought a new Macbook today. About an hour ago I opened it, turned it on, and started downloading and installing system updates. It's been plugged in this entire time. Then I remembered that I'm supposed to condition the battery right away. I looked up the article on Apple's website. Should I have just turned it on and plugged it in to charge without using it? The article isn't entirely clear on that. Or can I keep setting it up and using it as long as it's plugged in until the light on the power cord turns green (before unplugging it and allowing the battery to run down)? It does say you can use it once it's charged during the two-hour "rest" period, but it doesn't say whether you can use it while it's charging.