I have just heard that my new Air has shipped and while I wait impatiently, could some of you more experienced people help me get ready. I am 59 years old and self-taught regarding techie stuff, so be gentle with me! My questions will show my ignorance. At the moment have a 2007 Macbook Pro. I want to transfer my important stuff to the new Air, but not sure of the best way to do this. I am sure there are many unnecessary files on my computer, which I don't want. I know there is migration assistant but don't want to move everything. Also I want to delete some files but am not sure how vital they are. I have a file called 'migrated pc files' which I assume are the remnants of my old Dell - can I just delete this??? Any things I should NOT touch??? Help please.