I think ou need to use your frineds as much as possible--take from them whatever they are willing to give, emotionally and material stuff. You nee to get on ur feet and you need to get a job--any job. Can the state of local agencies help you out? Welfare? Homeless shelters with councilers willing to help you get your life on track? Do you have a degree? First... starting as soon as possible:
1. Find a place to live--even if it is only for a week
2. Find a way to support your physical needs (food, water)
3. Find a job. Even if it is only temporary (lots of stores hire extra work this time of the year)
4. Work hard, work hard, work hard--you'll get good recommendations for future jobs.
I have never lived in a big city before-- just ones under 20,000 pop. In those settings people look out for each other. homeless shelters may be able to offer you more help or guidance. In Chicago you will be a "number" I suspect.
And get used to saying, "Would you like fries with that?" Those types of workplaces will hire you. From there you can build.
Remember, it is better to build your life up yourself rather than get hand-me-downs from family. My college costs $42,000 a year--if it weren't for my parents I would be in debt big time. But I won't have the gradification of surviving on my own and being sucessful like you.
Also, there may come a time when you can thank your loved ones for what they have done for you--when you are on your feet.
Best of luck and take care.