The best overview is in Encyclopedia Britannica (Destiny)

by Funkmon , Saturday, September 05, 2015, 22:54 (3464 days ago) @ cheapLEY

I did a research project on the astronomy of Pythagoreans a couple years ago, and there was basically nothing online. Now, there are Wikipedia articles, but they're kind of badly written and don't explain some fundamentals well.

If you can, go to your library and hit up their Britannica. They have a long article with nifty pictures and stuff. It was the basis on which I wrote much of my paper, and literally ALL of the diagrams I didn't make myself were from that encyclopedia.

I think they have a preview function on their website so like the first article you go to is completely open. They also sell a DVD updated and overhauled this year which is great and $40. They sell the 2012 version for $10 on their website.