Hi there, max-at-cuba-gmai.
You have the option to link the bank account where you're booking income is deposited. This way, deposits will automatically download in your bank feeds. The other option is to manually enter your income through the Bank deposit page.
Here's how to link an account:
For more details about this process, you can click this page: Connect bank and credit card accounts to QuickBooks Online.
Keep me posted if you have other questions. Take care!