Hi Colin and welcome.
The Messier and Caldwell lists are a great start. Try:
http://www.deepskywatch.com/files/ds...de-Messier.pdf for Messier, and
https://www.astroleague.org/al/obscl...l/cldwlist.pdf for Caldwell (this is Patrick Moore's supplementary catalogue to the Messier list).
A good monthly chart to grab is the "Skymap" at:
http://www.skymaps.com/downloads.html (make sure you get the southern hemisphere one).
I find a great book to have at the scope is the Pocket Sky Atlas:
http://www.shopatsky.com/product/Poc...as/sky-atlases
- if you use this you can go through each object for the constellation you are looking at: most of them will be visible in an 8" scope, but some may be very faint, and some of the planetary nebulae that are shown are very small and only visible to experienced observers.
All the best, and happy observing!
- Dean