Thanks for choosing QuickBooks, SnoKingRef.

I agree with aj4fluentbiz. A Vendors are those people or companies that you pay money to, such as a store, utility, landlord, or subcontractors who do work for you. On the other hand, Customers are people who owe you money for products purchased or service rendered.

I'd be happy to walk you through on how to add Customer/Vendors by following the steps below:

To add Customers:

1. Click on the Sales on the left menu bar.
2. Choose Customers.
3. Click New Customer.
4. Enter the necessary information.
5. Click Save.

To add Vendors:

1. Click on the Workers on the left menu bar.
2. Click Contractors.
3. Click Add a contractor.
4. Enter the necessary information.
5. Click the Add a contractor tab.

I've attached some screenshots below so you can have a better view.

Should you have additional questions about vendors and customers or anything else QuickBooks, don't hesitate to ask me here in the Community. I'll be around to help you out