The Australian Taxation Office has various tax rulings and other useful information about potential GST, Capital Gains Tax and Income Tax liabilities.
The Office of State Revenue has Transfer Duty Calculators and other useful information and fact sheets regarding Stamp Duty, Land Tax and the First Home Owners Grant.
Charities for bequests:
The following links may be helpful if you are interested in making a bequest to a charity in your will. They are just a few of the many worthy causes that would be grateful for your donation.