How do i start afresh with my business from scratch I choose the incorrect G/L accounts in the begining

You've got me here to help you with achieving your goal, info.

If you want to delete your QuickBooks Online company file and start fresh, you can do so as long as your account is under 60 days old. 
Here's how to do it:
 

1. Log in to your account as an Admin.
2. Once signed in, open this link. Alternatively, you can go to the URL in your browser's address bar, delete all the text and enter the following web address instead: https://app.qbo.intuit.com/app/purgecompany
3. To proceed with deleting your company data, please type Yes. 
4. After that, click OK, then Wipe data.

However, if your account  has been active for over 90 days, you'll have to cancel it and set up a new subscription. 

You can find more information about this process by visiting the this link: Delete your data and start over in QuickBooks Online.

Additionally, check out this article: Get started with QuickBooks Online. It has details about the main features of QuickBooks Online and includes links to help you start and run your business.

If you mean something different or have any other questions, just drop a reply below. I’ll ensure everything is taken care of. Thanks for stopping by, and have a good one.