I'm finding it difficult to find any detailed documentation on Time Machine. Maybe there isn't any - maybe it's not that hard. I come from a PC background where everything is more difficult than it should be. I have a new MacBook Pro and will be connecting it to an external HD via FireWire 800. This drive will only be used for Time Machine. I'm not sure how this is going to work with sleep mode however. I understand that the first backup takes a really long time. Do I need to manually set my energy saver preferences so that the MBP will not go to sleep or will TM prevent it from going to sleep? Can I safely close the lid on my MBP when TM is running and it will safely stop and restart when I come out of sleep mode?