rdh, You'll want to contact the dept. of agriculture in Reynoldsburg at 1 800 282 1955 and see about getting the needed training packages. Ohio Pesticidde Apllicator has training courses you can take in Columbus Jan. 31 and other dates. To contact them 888 863 3445 this is OTF which is an excellent organization to help you with training, membership and industry discounts.
The core can be difficult but if have some green industry background and some common sence the tests can be rather easy. I've help many people go through this test and they all say they yhough it would be alot harder, but I train pretty hard.