http://www.qatarliving.com/answers/cost-of-living/how-much-should-i-expe...

Also search on QL for "salary, budget, cost of living...etc".

I'm sorry, I don't help on threads about salaries and budgeting, because it noticeably varies, please send me PMs (private messages on Qatar Living), if you have any specific questions. All I can do, is forward a previous very long discussion between me and a previous QLer who was new to Doha, would that help?

Salam