Aspect and configuration knowledge help?


We've found a bunch of sites that have "free readings", and tons of stuff on the most superficial aspects of what a planet means in a sign.

But where can we go to read up on, "in excruciating detail" how each planet effects a person depending on where it's located? It would be nice if there were also historical studies / research data showing correlation and causation.

Really anything to increase our knowledge so we can interpret our own charts, as well as grasp what'll happen if two or more planets share a zone and how.