Good morning to you, hickmanscarcare.
I'd be glad to walk you through starting a new company.
Each new company requires a separate subscription in QuickBooks Online. This link provides details about the different plans to choose from: https://quickbooks.intuit.com/pricing/.
Once you decide which version would suit your company the best, select to Buy Now or begin a free 30-day trial. You'll be able to use the same login credentials for your original subscription and then toggle between companies.
The following article offers additional info about adding a new company in QBO: https://quickbooks.intuit.com/learn-support/en-us/manage-intuit-account/create-or-add-another-compan....
Please let me know if you have questions about this process or anything else. I'll be here to help.
Keep in mind that QBO is a web page, you can run the same company from anywhere