iPod Nano 3rd gen takes around half an hour to charge fully.
About an hour or less
Yes. As long as the laptop is on and running, not in standby or hibernate, your iPod Touch will charge while plugged in.
You need to charge it for 45 minutes then you are done
No, the iPod will not charge if it is off. The iPod must be on for it to charge.
about a half hour
The operating system has absolutely nothing to do with the charge time. The iPod nano should take about 3 hours to charge completely.
2 and a half hours.
3 Hours For 3 Days
Yes. Even if that computer doesn't have Itunes, it is still able to charge the Ipod, so long as the Ipod can be connected to a USB port.
That all depends on what type of Ipod you have. I recommend leaving it charge for at least 4 hours, as occasionally problems can arise if a brand new ipod is not fully charged. Given that you'll have the ipod for a while, charge overnight. Works best if you already have an ipod charging station or wall adaptor.
Yes, the iHome does charge the iPod.