Monster dot com, Dice dot com, recruiters (= headhunters) for many special skills. many temp agencies' jobs have potential to become full-time.
Thing is, you have to have a resume' with actual work experience, be willing to show up and sell yourself at an interview, show you care enough about a prospective employer to learn what they do, show yourself willing and able to learn, respect the work and not think it beneath you, and .......... actually work.