Apply to the companies that are set up to take applications online, and monitor the message boards for job leads. You can always send in an application by regular mail if it is needed later. Print out this page and check off the companies as you apply so you will have a record of when you applied. It is hard to keep track of them all otherwise. Don't worry about applying to so many, the more you apply to, the greater chance you will have of getting steady assignments.
Most jobs are in the Midwest, but some are all over.
Apply online - over 2000 assignments nationwide each month. Many opportunities nationwide. Recent posting is for young looking shoppers to see if they are carded when purchasing alcohol.