How to prepare for exam: Primavera P6 Enterprise Project Portfolio Management 8 Essentials, Exam Number: 1Z0-567? any recommended material?

http://www.oracle.com/partners/en/products/applications/primavera-exam-1Z0-/index.html

Please see the link which is helpful for the preparation

Dear Amer,

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However, my company is not OPN, and I'm unable to use Oracle Material,

is there any3rd party material?