Thanks to Sam Lionheart for this guide! Yes difficult but a great step by step guide!
A member of our family had a coffee spill on their MacBook Air 11". The Apple Store said the machine was "dead" forever and encouraged us to buy new. I used this guide to take the Air apart, clean it, and put it back together. The Air is now working, it has some minor glitches so we will have to watch it and keep the data backed-up. But it works.
The hardest parts, where I wished there was more hints - helps, were putting the Air back together at: #38 reattaching the larger ZIF connector and #15 reattaching the antenna cables.