Here are some suggested sites where you can ask legal questions and get legal answers. You should contact the Bar Association in your state of residence for the referral of a properly experienced attorney in good standing with the Bar.
If you are hoping for a free online "chat" with an attorney, you need to wake up and smell the capitalism. Attorneys will not chat with you for free online without a retainer and representation agreement. The liability for anonymous live chat is just too high to risk. Good luck.
If you can't afford a lawyer and you are charged with a crime, you are entitled to a public defender, who will be appointed by the court. Info about the Cook County Public Defender is at the first source below.
Some lawyers in private practice will take pro bono cases if they are interested in the case, but they are very rare and they don't advertise. Most lawyers who don't charge for their services are those working at legal aid agencies, which usually only handle civil cases. There are a few legal aid agencies in Cook County that do take some criminal cases; an example is Cabrini Green (second source below).
I found these at the third source, which has more links to legal aid, pro bono, and public defender offices. Check the links in the Statewide category at the top of the list, especially the links to "Free and Low Cost Legal Assistance" and "Lawyer Referral Services and Free Legal Services". In the Multiple County category, try the link to "Illinois Pro Bono Legal Help". Then scroll down to Cook County for some local resources and the Public Defender office.