u will spend here 6000 for housing,200 riyals for mobile recharge,230 for internet,for transportation u will spend 500 to 600 riyal depending how far ur work place form ur accomadation,if u will buy a car per month instalments will be around 1,800 riyal depending what car will u chose,and ur monthly expenses of ur alone it will be 1,500 riyal depending upon u is the minimum expenses here in qatar.