Getting to the city from Edinburgh airport - help!

[CLW_aviator]

Hello,

I want to visit the Museum of Flight, which is located not far away from Edinburgh. Their website is http://www.nms.ac.uk. Their address is shown... however, I`ve never been to Scotland and have no idea how to get from an airport to the museum. So I`d be really grateful if someone could help... saying everything step - by - step. Pe precise please... and, please tell me how expensive the trip would be (approximately). I know it may sound like a silly question, but I want to make a plan of my trip, which I found a very difficult task...