If you can't afford to pay cash for an RV and have an emergency fund for repairs, I would suggest starting out at seasonal jobs that provide housing. I know whitewater raft guides normally live in company provided (very small) cabins for the season. Some of those folks then head for mountains during the winter as ski/snowboard instructors.
Joe, Mary and Dakota, the wacko cat
Fulltiming since 2006
2006 Dodge 3500 QC CTD SRW Jacobs Exhaust brake
2017 Open Range 3X388RKS, side porch