A few years ago, I started to write a series of articles on Atlantis. I have finally completed that series; you can find the first article here:
The topics are how Atlantis developed (very briefly), Atlantean technology and society, and how and why Atlantis ended. I hope you enjoy the series!
There is a lot more information that I could write, but the articles as they stand give a good overview without overburdening you with words.