Hi. Sadly, I do not have the guide. But I would like for you folks to provide it for me. I am sure this has been spoken about plenty so far but it's all garbled between people shouting about prices, release dates, delivery times and where they live. My concerns are losing my documents and data, inadvertently erasing my contacts and calendars etc (synced MobileMe information), which keys and passwords to take a note of or ensure i know beforehand (if any), Time Machine/Time Capsule compatibility, anything else i haven't thought of. Ideally, the people who'll respond here will have already done this and are not speaking through previous installation experience of an older OS nor 2nd hand information nor assumptions or guesses. Thanks very much.