If you are new to cycling, it is worth doing some research and speaking to experienced cyclists.
Plan safe cycle routes in your area using resources like
Know the law, even if you are an experienced cyclist, and, most importantly, know how to ride safely. It will be life-saving.
The Amy Gillet Foundation have put together
a fantastic list of the road laws by state: www.amygillett.org.au
For general riding tips, here are some great sources and suggestions from experts in the field: www.sydneycycleways.net