I was homeless off and on beginning at age 15. I slept in a park, at various people’s apts. and in shelters. Things were different back then because there were a lot more services offered to people in need. Those services have been eradicated due to the economy and the recession though. I didn’t have a car and my family didn’t want me so I could not go to them. I became friendly with other street kids and we took turns staying at some of their relatives houses for a night or at least long enough to shower and change. My best advice for someone in this situation now is to generate enough income to at least pay for a cheap hotel to stay in even If you have to share it with another person. One gets the bed the other the floor. Hell, it beats sleeping in the park like I did. Look up friends or relatives that will help you. Bus stations, airports, hospital emergency rooms and trains are somewhat safe with some amount of security if you really have no other option in an emergency but this should be only a temporary last resort as it is dangerous. Call some churches, mosques and synagogues. I hear Catholic Charities and the Salvation army help people a lot. Go to local welfare office and refuse to leave until they help you. Back in the 80’s I told a welfare worker that I would not spend another night in the street and if they didn’t place me somewhere, I would call the media and have them film me being thrown in the street by welfare security because I was not going quietly. That evening I got 2 tokens and a referral for a hotel where I lived for 1 year before I got my first apt.
Good Luck and please keep me posted.