If you want to learn modding Praetorians, this is the guide to get. It covers almost everything that can be modified in the game. It's not yet completely sure if there will be a next version of this guide, but it should give you a good start.
download from here:
http://www.zshare.net/download/52942971f537e46f/
download from here:
http://www.zshare.net/download/52942971f537e46f/