What are your prime directives?
If you were RoboCop, you'd probably say, "Serve the public trust, protect the innocent, uphold the law." However, I doubt you're a cyborg cop from Old Detroit or Peter Weller, so I have no idea what your pre-existing prime directives are. (And yes, Peter Weller is a vigilante with the same prime directives as the character he played in RoboCop. How do you think they cast him?)
Since you've somehow found your way here, your new prime directive might be to learn about information architecture, usability, and interface design. It just so happens that I have information that exactly fits said new prime directives. What luck!
This information might fit with your prime directives, but this isn't the definitive source on these three topics. You might want to read other books on usability or web design like Horton and Lynch's Web Style Guide, which is what this site's information is based upon.