My advise to anyone interested in homeschooling is to definatly look at the dedicated homeschool forums. There is a wealth of information about homeschooling in general. Such as rockpoolhomeschool.com aimed at Aus. and NZ. (prod.Aus)
Not to mention dedicated homeed web sites such as HEA and HEN both australian based sites(both listed in above post).
I think the key is research, research, research.
There are several different homeschool styles to look at and decide which is right for you. From "school at home" to "Natural learning" Just to name two.
Homeschooling can be as cheap (library card) or as expensive as you can afford.
Enjoy your research