Hey All, I know very little about the actual procedures about how stocks trade in the US. What little I've done to date in trading has been with futures. I'd like to learn more about stocks, but they seem more confusing. For example: * How does the NYSE work ? * How do the ECNs like Island, Archipelago, etc work ? * How do the ECNs and NYSE interact with each other. Do stocks actively trade on the ECNs during NYSE market hours ? How many ECNs are out there ? * How does national best bid/offer work with stocks ? Etc Can anyone point me in the direction of material that would be helpful in learning this stuff ? IE, books or web sites that are particularly good. Thanks ! -Tony