The world subscription gives you access to more than 1.5 billion family history records for Australia, New Zealand, Britain, Ireland, USA and Canada.
On FindMyPast, select 'subscribe', type WORLDAU in the promotional code box at the bottom of the payment page, and click 'apply'.
If you do not want your subscription to automatically renew at the normal price after your initial 30 day period, un-tick the 'auto-renew my subscription' box in the My Account section of the site.
You may want to read why I use and recommend FindMyPast.
(This post also appears in Updates Genie, which has replaced my email newsletter.)