Aspects

http://astrologystudy.blogspot.com/2011/02/aspects-and-chart-shaping.html

Decanates

http://astrologystudy.blogspot.com/2011/02/decanates.html

Tarot on TV

https://marygreer.wordpress.com/2008/10/21/tv-movie-tarot-watch-list/

Library of Free Astro Ebooks

http://far.orgfree.com/
These appear to be public domain.
And something interesting to note, occult related books are often the first to disappear off public library shelves making free online resources that much more important.

Celtic Tree Astrology

http://www.whats-your-sign.com/celtic-tree-astrology.html

Celtic Animal Signs

http://www.whats-your-sign.com/celtic-animal-signs.html