Hi all,
If you need help preparing for the OET, there is a good website selling helpful (high-quality) practice materials and tips in their preparation ebooks. They also offer specific assessments by Australian OET teachers (via online) to tell you whether or not you're ready to take the test.
You can find it here: www.oet-pc.com.au
I sincerely wish you all the best in your studies and hope you can pass the test first time! đŸ™‚