I'm glad to see you here in the QuickBooks Community, Roslyn.
Regarding your concern, I suggest you take a QuickBooks Online test drive so you can navigate and explore the program seamlessly. This is for you to dive in and experiment with features and options you might be hesitant to make on your own QuickBooks Online account.
On the other hand, you can read through these articles to learn more about how the ProAdvisor program works as well as to get answers to commonly asked questions about the QuickBooks Online training and certification:
Additionally, refer to the following reference to check for recorded webinars or self-paced modules for your training: Training & Certification.
Let me know if there's anything else I can help you with. If you have other concerns about the QuickBooks ProAdvisor exam, I'm just around to help. Take care always.