100 Lessons on Systems’ Approach to Vedic Astrology
http://www.yournetastrologer.com/learn_astrology_lessons.htm
Systems’ Approach Website in French
http://maison9.blogspot.com
Systems’ Approach Software
http://www.jyotishtools.com
Search through this Internet Atlas and Time Zone Server for coordinates and time zones.
http://www.astro.com/atlas/