Hello there, @alisonhduckworth.
Let's check the invitation email if the process goes through in creating a new account as a company admin. This way, your email will be linked when you log in.
Once everything is done, you can now work seamlessly with the accountant in reviewing your client's books and prepare during tax season.
I've got you this helpful article for ideas about your self-employed account: QuickBooks Self-Employed Overview.
You can also check out these articles that will guide in preparing your taxes in QuickBooks:
If you have any other questions, you can always reach out to me. I'll be here to lend a hand. Take good care!