Why would you need to clean a computer...? Maybe the screen, but a soft T-shirt can take care of that...my macbook air is still shiny new after several months of carrying to classes etc...without any superficial cleaning treatment.
I just use the Apple clothe I got from an older MacBook Pro purchase and a cleaner rated for aluminum, and then one rated for plastics for the display.
Most things that people sell as "macbook cleaners" is just eyeglass cleaner with a price mark up.
agreed...you can way overthink this -stay away from corrosive and abrasive things in your cleaning closet like softscrub and ammonia and you'll be fine.
100% cotton baby diaper, slightly damp, for the screen. The rest of the Air gets the same treatment, unless it gets gooed, then I use a baby wipe to clean it. I NEVER touch the screen with anything but a 100% cotton diaper. I'm thinking microfiber would be just as good.