Sorry but Qatar Foundation "can't" answer those questions? That seems very strange as they are the organization offering this opportunity.

Unless someone here has been able to get into this programme, you're unlikely to get definitive (and authentic/reliable) information.

Living in Qatar is expensive, even for a student. If your family isn't in a position to support you for the basics (food/accomodation) then it would be extremely difficult to survive here because you won't be allowed to work.