your salary will depend in the job that you will get here,or you can discuss with your future employer about the offer, just elaborate the contract before you sign, it is better to read about the laws of Qatar and the traditions of the people, the life style it depends on how will you manage it, but it is advisable to have your own car because it is necessity here, taxi or(karwa)is very expensive and limited, if you dream for a better life, I say, GO for it!!! and hope for a positive result.