Im going to be travelling all over Europe for a few months soon, but I wish to continue to study Cocoa and xcode - Internet connection for me during this is going to be a big bonus and something I am not relying on at all. I would be grateful if anyone knew of a downloadable reference to cocoa, maybe in pdf, like what Apple have got at their developer site. I am wondering whether to attempt to download as many as the individual pdf's from Apple - but there seems to be thousands - Is there a master download to get them all in one go? Or perhaps a comprehensive reference somewhere else?. I dont want to, or cant take real books, because space and weight is a premium.