Find the original will
The court needs the original, not a copy. Check the person's papers, and ask the law firm that made the will whether they hold it in safe custody.
Secure the assets
Make sure the house is locked and insured, and tell the banks about the death so accounts are frozen. Keep receipts for anything you pay.
Don't hand anything out yet
Family provision claims in Queensland can be started up to nine months after death. Paying beneficiaries too early can leave you personally exposed if a claim comes in.
Find out whether you need probate
Banks and the Titles Office often need probate before they'll release funds or transfer property. Before applying, notice of the application must be published, and the court then needs time to process it.
General information about Queensland law, not legal advice for your situation.