HI Tammy, good for you. talk to folks that are doing it. great place to start is the Illinois Herb Association. wonderful group and very helpful. here is their website.
http://www.specialtygrowers.org/herbs They have a conference the first week in January in Springfield. also one coming up in June. 20011 Midwestern Herb and GArdne Show is coming up Feb11-13 in Mt Vernon. here is their website. www.midwesternherbandgardenshow.com good luck, Sandy