Money and lots of it... I just today started my nano tank and spent $167.75 on salt, Live rock, substrate, Hydrometer and thats it so be aware the price is hefty and probably a good way to go about it is cycle the tank with live rock and while it cycles save up to buy more supplies and study... I saved money on a power head as I had a old mini filter which I took the medium out of and it does 320 Litres per hour so does roughly ten times my ten gallon... I will say that going for a FOWLR is a good option and also I wouldn't buy a protein skimmer yet even if they push you to buy it (this semi happened to me and I didn't have a spare $60) good luck
Please Note: I am a complete newbie to marine aswell so Im pretty much in the same boat as you and being in Australia aswell be prepared for large price tags... and the live rock will be in Kilo's and not pounds so remember 1 Kilogram equals 2.20462262 pounds
so for ten gallons about 6 Kgs of LR should be ok I got about 4 kg's ( 8.8 Pounds) for around $60-80 today