Further education (education once you have left school) is VERY popular in Australia.
You can do university courses part-time/full-time if you can prove you got a sufficient level of education in your country of origin (have certificates/diplomas evaluated and translated).
Likewise you can go higher into Graduate Diplomas and Post-Graduate studies. There are some EXCELLENT distance-learning courses that are as good as or better than their campus-based counterparts. It depends on the university.
For people who like less of a commitment, you can go to the TAFE, which is geared towards more vocational skills. You can study almost anything on earth, there is no point giving you a list.
For more information about courses in NSW go to: http://www.tafensw.edu.au/
You can join workshops at your local community centre (cheap) or attend classes in private institutions (expensive). Local community centres usually have language courses if you need to improve your English. You can find their numbers in local papers and pinned on bus stops, cafes, etc...
Update 11/11/2003
Babbel is an international success with millions of active subscribers and ranked as the world's #1 innovative company in education.
Learn and review on your own schedule: Mobile, tablet or desktop compatible, with lessons about 10-15 min.
Expert-made courses: Learn the basics or focus on topics like travel, culture, or business.
Start speaking right away: Learn to speak a new language naturally and conversationally.
Every learner is different: Each course is based on your native language and personal interests.
Remember everything: Babbel employs proven cognitive techniques that move new vocab to your long-term memory.
Refine your pronunciation: Practise speaking and improve your pronunciation with speech recognition technology.
Registration with Babbel is completely free of charge and the first lesson in every course is FREE to try (Depending on the language you choose, that's 30-80 free lessons!).
If you want full access to Babbel's courses, simply choose a subscription that works best for you. Buy with confidence: 20-day money back guarantee!