Learning: Bicycling in Illinois

I've been thinking about going out in my neighborhood with my bike on lazy evenings--whatever those may be, ha!

So what are some of the things anyone interested in bicycling in Illinois should know? Such as laws, best practices, and hand signals for turns and such?

In case anyone is interested, here's a rundown of great resources for ya:

Illinois (state-wide)

The best way I found to find information is to search for "[Cityname, State] bicycle safety" on Google. There are variations on this search you can employ: bicycle club near [ZIP], bicycle class near [ZIP], etc.

Just for some closing fun, enjoy this video by Queen. Cheers!