I have been working with Sun Grid Engine since 2002, below are some of the stuff I have found useful.

First and foremost the most important link of all is the main Grid Engine community web site - http://gridengine.sunsource.net/.

60patches and 53patches are the htmlised versions of 60patches.txt and 53patches.txt, it just makes life easier when looking for the details of the latest changes :)

An updated version of the pre-WS globus/sge jobmanager can be found here.

And if you are looking for the GT4 version look here.