If you don't have a job you can take with you or if you didn't hit the lottery, your going to need to find a way to make a living while on the road. Most jobs are seasonal and are either farming, amusement parks, volunteering, workamping, selling fireworks, pumpkins, or Christmas trees. If you have a skill or a trade, your best bet would be to look for a temporary job in your field, in the area you want to see and explore. Or try to find a way to make money off of your hobby. If you like to make things you might want to consider becoming a vendor at fairs and craft shows.
One of the best sites for finding work is Workamper News, here you will find most of the campground, farming, and temp positions. Other sites to check out are:
http://volunteer.gov/gov/
CaroWinds
Sugarbeet Harvest
http://www.work-camping.com/
http://www.work-for-rvers-and-campers.com/
Dollywood
Southern Cross- a company that hires traveling gas leak techs. Paid training, no exp necessary, they pay per diem, travel time, and extra hourly for the use of your vehicle.
Adventure Land
Roadtechs- site for the trades
Remember, the possibilities are endless. It can and has been done. good luck!
If there are any I missed that you would like me to list or if you would like anymore info on what I have listed Email me