Hi, brand new to online QB with no instructions. Mainly use it to write checks. Unclear if details must first be entered in 'pay bill', or do I just go to 'checks' tab?
I'm here to help you get started with your QuickBooks Online (QBO) account, @brown-commercial.
In QuickBooks Online (QBO), you can record a bill for your vendors that you'll be paying later. You can check this article for more information: Enter and pay bills.
You can write a check or create an expense for expense transactions that you've paid immediately. If you need to enter a check number, then you'll need to add your transactions by writing a check. If not, then you can add it through expense.