Here are some useful bridge sites for you to visit:
Masterpoint Centre. Where you can look up your own masterpoints.
Strategy for Swiss Teams by Steven Gaynor
Bridge Conventions 
FREE online Bridge. By far the best site I've found. It's suitable for all levels of play, has lessons, mentors and much more. Initially it takes a couple of minutes to sign up - do use a nickname - and to set up your "profile" (your system card) but after that, it's an instant connection.
Visiting Melbourne? Come and play bridge at Eastern Contract Bridge Club.
North Shore Bridge Club
Visiting Sydney? Play takes place Mondays to Saturdays at least twice a day.
The Queensland Bridge Association, with links to all Queensland clubs.
The international Online Bridgeclub, "the friendliest bridgeclub on the net"