As well as books I would suggest reading discussion boards like this, and the ASX website. Set up a simple spreadsheet and do pretend trades for 3 months. See what your pretend balance is at the end of the 3 months then do it again for another 3 months (remember to charge yourself $20 a trade LOL!)
By then you may have a general understanding of the market and a variety of companies, and know of a share that you think has some medium-long potential. Buy whatever you can afford of that share and hold onto it.
Keep your pretend trading going for another 6 months then do another buy.
Don't rush into anything, and good luck!