The driving test for Americans is a pita ever since some Qatari got pissed at us. Brits get their licenses automatically. Traffic is a madhouse. Traffic enforcement is done by camera, everyone knows where the cameras are, so there is virtually no speed limit on some portions of the highways. Sunday is the equivalent of Monday here. Sunday morning you can see the carnage from the weekends stupidity strewn along the highway. They like revving their engines. There is nothing more heartbreaking than hearing a Ferrari bouncing off the Rev limiter just because. It rains about twice a year and the roads get absolutely retarded.
Beware the roundabouts. Just because someone is on the inside lane does not mean they don't intend to cut the other 2 lanes off to make his exit. Also beware of people randomly stopping to meet people in the damn roundabouts.
The Pearl is a nice place to live.
Don't expect to go anywhere on the waterfront boulevard on Thursday or Friday nights.
Expect private schools to cost 20k+/yr for grades k-8
Qatar's airline kicks ass.
Getting your residency permit makes the entry and exit process much easier.
There is a shooting club there but I was never able to go.