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Several careers in the healthcare field have traveling contract positions (very well paid) in which the company you work for pays for your rent, vehicle, and salary. These tend to be short term assignments (3-6 months) at each location. Some fields that come to mind are nursing, physical therapist, and medical laboratory scientist.
A great site would be http://www.bls.gov/home.htm where you can search by career and it will provide you information such as education requirements, salary, job outlook, etc.