"Under Illinois law, fundraisers and charitable organizations are required to register each year with the Attorney General's office. Potential donors may then access important information such as income, expenditures, programs and administration before giving to the charity." Lots of useful information here on legal requirements in Illinois as well as FAQs.
Illinois ResourceNet: A Funding Access Initiative (IRN) is a university-based resource providing Illinois nonprofits and local governments with the competitive assets to access federal funding. IRN offers organizations a unique approach to grant access centered on providing information and resources on an interactive website, working with experienced technical assistants on designing high caliber proposals, and connecting with a diverse group of partners to meet proposed project goals. Housed at the University of Illinois at Chicago.
The Donors Forum enables the philanthropic and nonprofit sector to address community concerns with comprehensive information, skilled leadership and the resources necessary to build institutions and affect change. They serve the nonprofit community of the state of Illinois.