1. get a job
2. get a car, get car cover / blackout curtains / window insulation to block people from seeing in
3. get basic hobo gear, sleeping pad, tent, sleeping bag, latern, stove, at least one better yet 2 cell phone batterie chargers
4. keep at least a couple days food and water on hand.
5. piss bottles and an emergency shit bucket with liners.
that's most of it. the big thing is don't act homeless. people don't notice much or care unless they have a reason to, like your bothering them or you smell like shit and are driving people away from their store. get a 24 hour fitness membership to shit and shower. it's a mixed bag, keep in mind your only entertainment is going to be what you have around you, that probably means lots of screen time which translates to lots of cell phone charging.