HI, @neil-elizabeth-o.
Allow me to chime in and help clear things out.
Usually, QuickBooks has a +New button to enter any transactions that you'd like to add to QuickBooks Online (QBO). Ensure to have the Side Bar Menu, this way you'll see the +New option. However, based on the screenshot you've added the Side Bar Menu is unavailable. You can click on the burger icon forward to view it. Please see the screenshot below for visual preferences.


After the process, you can reconcile your account. I'd recommend performing it every month to keep your books accurate. For the detailed steps, kindly refer to this article: Reconcile an account in QuickBooks Online. It also contains information on how to edit completed reconciliations.
Please know that you're always welcome to post any questions you have in this space. Have a great day ahead.
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