JONRON,

http://www.grv.org.au/central/index.php
http://www.greyhoundswa.com.au/13227.htm
http://www.graq.org.au/home.asp
http://www.greyhoundracingsa.com.au/
http://www.greyhound-data.com/

The vic and w.a. guides are the best of the bunch by far. Another site to look at is greyoundform.com.au they produce National Greyhound Form newspaper which includes a form guide that goes back three races. IMO it not much of a help but its better than nothing.

In regards to turning a $20 profit each night i think thats a pretty achievable goal but be prepared to put in the hours. The reason i say this is because of the very unstable market, in the blink of an eye dogs come in from 8/1 to 3/1 so while 3 min before the race 8/1 was great 1 minute later 3/1 is looking pretty crappy. Also start with a decent size bank that can handle the bad nights.

I usually just bet a flat amount unless its purely for entertainment then ill drop my stake. One thing ive learnt the hard way is to not decrease your bet just because its the rank outsider and no one else rates its chances.

Goodluck with it all.