Information and concept explanations for the advanced amateur astronomer can be found in this category.  A few of these pages assume you have been exposed to some algebra and the hobby of astronomy for a coupe of years.

bulletThe consideration of time - how we measure it and how it relates to our celestial coordinate system can be explored from the "Time" page.
bulletThe "Technical Data" page discusses Useful Formulas, Elliptical Orbits, Precession of Orbits, and the Drake Equation's impact on the possibility of finding alien life in the universe.
bullet"Tips and Advice" will grow with time to include many more helpful ideas.  If You have any that you'd like to contribute, please e-mail me!