Welcome down under, you will certaining learn a lot here, check out as many you tube clips you can about your detector it helps a bit.
Read your manual like 3 times then read it again!
Most of all get out there and learn what the machine can do, it takes time and many hours swinging!
Of course with detectors you get what you pay for! Start low and get a feel for the hobby, upgrade to the best detector you can, whenever you can, if it's a hobby you want to pursue and have the hours free to use it!
Cheers and good luck