Thanks for posting in the Community. I'd be delighted to assist you with starting a new account.
Here's how you can start a new QuickBooks Online (QBO) company:
I suggest the following article, which has additional information insight on this process, such as how to subscribe to another account: How To Create A New QuickBooks Online Company Or Companies.
That's it. Now you know how to start a new QuickBooks Online company.
Lastly, I recommend the following link that contains tutorials for QBO designed to help a user get acclimated to the software and get the most out of it for their business: QuickBooks Tutorials.
I'm only a few clicks away if you should need anything. Cheering you to continued success.