I want to post my Urban fiction book on the web for a couple of reviews before I publish. Any sites?

I've been working on my book for over two years and want to find out if it's good enough to become published. At the same time I may need to copyright it or go through a site that would help protect my creativity. Ha! It's pretty good though. Raw, uncut, African-American told storyline that takes place in Oakland, California. Murder, greed, , drugs, materialism, law enforcement, loyalty, trust, recognition, and reputation all takes place in this book. So, any suggestions for reviews so I could get an idea of what people think?