I'd be glad to help you enter accounts and reconcile transactions in QuickBooks Online (QBO), rickloyst.
If your account is connected to online banking, the program will download your transactions up to a certain date, 90 days is the industry standard. To get the older one, we'll have to manually upload them into the program.
You can start by signing in to your bank's website and follow their instructions to download your transactions as QBO, CSV, or QFX format. Once the file is formatted correctly, follow these steps to import them.
Sign in to your QBO account.
Hover your mouse to Transactions, then click on Bank Transactions.
In the Link account drop-down, select Upload from file.
Select the Drag and drop or select files button and then choose the file you downloaded from your bank. Then hit on Continue.
In the QuickBooks account dropdown, select the account you want to upload the transactions into. Then click on Continue.
Follow the onscreen steps to match the columns on the file with the correct fields in QuickBooks, then click on Continue.