Sign Languages

I learnt the Auslan (Australian Sign Language) alphabet as a cub scout, by cutting out and laminated a sign guide into my wallet and practicing, and have picked a couple of signs over the years, but have only in the past year been trying to seriously study Auslan.

The best resource that I've found is the iPhone/iPad app from the Royal Institute of Death and Blind Children (http://www.ridbc.org.au/resources/auslan_tutor.asp )* but I was wondering what other's suggestions and experiences have been like.

I'm particularly interested in online or downloadable resources, particularly free/trial/cheap because I'm a slow learner and feel like I need to get past the basics, but recommendations for learning tools later on are welcome too.

*i have the free version which I find is pretty good for a vocabulary builder/ getting started, but the paid version which my mother has, goes much more in depth and is quite good for getting an understanding of the grammar and moving past vocab into actually communicating.

I found this one the best due to a combination of convinience of form, the way information is conveyed - that the have a picture of the hand shapes, a video on how it's used and a text summary, and the extent of the vocabulary.