Trying to find my vendor list for editing purposes.

Welcome to the Community, @parleesteve-gmai.

I'll make sure that you can update your vendor information. We can go to the Vendors tab and edit it. When you're ready here's how to do it:
 

1. Choose Expenses from the sidebar menu.
2. Head to the Vendors tab.
3. Hit the name of the vendor you want to edit.
4. Click the Edit button.
5. Make the necessary changes.
6. Tap Save to complete the process.

I've added screenshots below for reference.

Check this article for more information: View vendor transactions.

Feel free to visit our expenses and vendors page for more insights about managing vendor transactions.
 

Additionally, you’ll want to pull up some reports that can give you a snapshot of your business and personalize them to modify the information according to your needs. Feel free to visit these helpful resources:

• Customize reports
• Run reports in QuickBooks Online

Let me know how else I can help you manage your vendor's information in QuickBooks Online. I'm more than happy to lend a helping hand. Keep safe always.