You won't be allowed to work but you can apply/search for job then once you have an employer, he/she will arrange everything for you like visa processing, medical, etc... Just make sure everything is ready. All documents like police clearance, educational certificates etc...are all authenticated and stamped and of course your CV, make sure it is ready since it is difficult to look for internet shops here and printing outside is expensive.

Do you have any relatives here? Cause if you don't you really need to have $$$. Minimum fare for taxi is 10QR(2.8$), food around 50QR(14$)/day(if you eat outside) so prepare for that. so then....good luck!