This is a really neat group of people brought together by a mutual love of / need for biking. Their mission is to educate people about biking -- everything from how to tune and repair a bike for daily commutes, to advocating for bike friendly trails and events in the Cleveland area. They even rent bikes if you just want to try it out.
I went there when I was just starting to look into biking. They helped me determine which size and type of bike most suit my needs. They have a decent selection of bikes for sale at fair market value -- don't expect to find any steals -- and a neat program where you can volunteer your time in exchange for use of the shop and to subsidize purchases (at $5/hr)
The building is a little run down and easy to miss, so don't be surprised if you have to drive by a couple times to find it.
tl;dr: This is a recommended starting point if you're interested in becoming a bike hobbyist or if you need a bike for commuting.