This can vary a lot based on your location and ability to work. Some general tips if you can afford them is
1. Get a gym membership for the showers
2. Get a very good sleeping bag to keep you warm and locate the safest spots to sleep.
3. If possible don't stay in one spot too long to help lessen the risk of getting kicked out
4. If possible find jobs that'll let you work for cash, maybe farms or something if rural
5. Talk with people. Don't give them the sob story just basically tell them you need help finding a job.
Best of luck and hopefully everything gets better for you