The Cash rate is the Interest rate for overnight money market deposits; we don’t expect any change here so it will not be the center of our discussion.
The important news event now is the RBA Rate Statement. It’s among the primary tools the RBA Reserve Bank Board uses to communicate with investors about monetary policy. It contains the outcome of their decision on interest rates and commentary about the economic conditions that influenced their decision. Most importantly, it discusses the economic outlook and offers clues on the outcome of future decisions
http://fxjust.com explains how to trade it.