Take a look at that site, it's a got a LOT of stuff, not sure whether it all relates to Astrophysics, but it has a whole lot of information about Physics. The site is well designed, and is easy to navigate around.
I havent actually finished astrophysics, but according to my teacher, the Jackaranda HSC physics is actually very detailed...you might want to check that out
Or, you can just borrow it off someone, then photocopy 2 to a page for all the topics that you do. It's kinda cheap, (and i think it's illegal) but it only costs about $10. 5c per page