www.noeltyl.com www.skyscript.co.uk www.astro.com Scholarly forum.  Great text resources.  Noel’s brilliance. Mostly traditional, but areas for every interest. Numerous discussions.  Allows personal chart inquiry. Alexander Marr’s very useful Astro software  calculates the following:  • Topocentric Primary Directions • Progressed Sidereal Solar Returns  • Secondary Progressions  • Lunar Cycles  • all Direct & Converse and much more...  Note: To use Astro on a newer machine, you will need a DOS Wrapper, such as DosBox Astrology: A Cosmic Science by Isabel M. Hickey (public domain)