We got requests from users to put the an all-in-one bundle of JGrass/BeeGIS downloadable on the net.
In 2010 we used one version for several courses. It is the one some of you know because it had working support for netcdfs in uDig.
Well, while waiting for the next version of uDig with much of JGrass integrated directly and while waiting for a complete merge of JGrass into uDig, we put the bundles at this page.
There are several presentations on slideshare of the courses that can be used both to get started with JGrass and also to do advanced hydrology with JGrass. Some of them can be found here, which is also the place were stuff will slowly appear as it is produced.