First, get used to saying "CHL" and not CCW here in Ohio!
Next, I have no idea where in Ohio you are located, but if you are anywhere near Dayton/Springfield or can get out that way, you might consider these guys:
http://www.safeccw.com/
That's where I went. Reasons I went with them:
1) They offer a one-day, 12 hour 8am to 8pm course. No 3 weeknights, no entire damn weekend, no crap. Just use up one Saturday and that's it.
2) Free woman student with any paid student. This is a great deal. If you have a wife or girlfriend or sister or mother or neighbor or sister in law or whoever, one female student is able to attend free with any single paid tuition. This is good on the wallet, and it's good for Ohio. The more people who get permits, the more gun owners and VOTERS in Ohio. The more women who learn to shoot and carry, the more crimes against women get the bad guys shot or killed or caught, which means less bad guys attacking women. Hopefully, one bad guy that attacks women gets ventilated and other bad guys take notice and quit attacking women.
When I went, I went with my buddy. His wife came and I used my free female to bring HIS mom. My wife isn't interested.
Still, though, great deal.
3) $100. That's a decent rate, cheaper than many. I don't know if it's cheaper than anyone, but if you bring a woman, that's kinda like $50 each. That's outrageous!
4) They offer a packet with all the goods for the Florida permit as well, which is very nice. I got mine. Takes forever, but adding the Florida permit takes your ability from 18 states in the U.S. to 33 states where you can legally carry concealed. FL permit is expensive ($112) and takes forever (months) but I'm very glad I have it. For Ohio folks, it's a good way to really expand where you can carry. It's not the only option, but it's a decent one.
So consider these guys if you do want to take the training.
And for everything else relating to Ohio CHL:
http://ohioccwforums.org/index.php