Signed a $240,000 mortgage note for a 20-year loan at 5% interest to purchase only record the acquisition of the driving range and the amount owed for the mortgage note.

Thanks for posting your first concern here in the Community, @bdesouza-student. 

To record a loan in QuickBooks Online, we'll need to set up a liability account first to track what you owe. 

Here's how: 

1. Go to the Chart of Accounts from the Accounting menu, then select New.
2. Select Non-current liabilities in the Account Type dropdown list. If you plan to pay off the loan by the end of the current financial year, select Current liabilities instead.
3. Select Notes Payable from the Detail Type dropdown.
4. Enter a name for your loan account. Then, enter the amount in the Balance field, and determine the as of date. Enter today's date if you want to start tracking immediately.
5. Select Save and close.

Once done, you can now create a journal entry to record the loan. Make sure to check with your accountant for proper guidance. 

For additional and future reference, check out Step 3: Record loan payments outlined in this help article: How to record a loan in QBO. 

Let me know how it goes for you so I can further assist you. I'll be here to back you up.