Look for Contact Us from within your QBO Essentials and request a callback.
But what you have to start with is:
Here is more info and all the step by steps. (unless you have run into a major problem you can do this yourself)
Welcome to the Community, @office60. I'd be happy to get you pointed in the right direction for receiving phone help with transferring data.
Here's how you can request a callback from an agent from within QuickBooks Online (QBO):
Should you not see the option for Get a callback, you can toggle it by entering Support in How can we help?.
The following is a brief video to serve as a visual reference:
I'm sure that a member of this team would be happy to assist you with migrating the files into QBO. In the meantime, I'm including a link to a resource with multiple articles for transferring information from Desktop to Online: QuickBooks Import Resource Center.
Additionally, I want to ensure that you get the most out of QBO for your organization and recommend the following tutorials as they can help a user to get acclimated to the software: QuickBooks Tutorials.
Please don't hesitate to let me know if you should have any questions about data migration or anything else. Hoping this response finds you with a smile.