Hi Arsen,
You should receive a "tax information slip", such as a T4 or a T4A for any income you may have received in the year. You then the slip on the appropriate page in TurboTax for that particular slip. To do so:
In the sidebar on the left side of TurboTax Online click on Income > T-slips > then select the slip that you have (most likely a T4 - Statement of Remuneration for your paycheck), and you will be taken to a page where you can add the information from the slip.
If you find you need more guidance from a Tax Expert and are using a TurboTax Live product, click the link in the top-right corner - Live Tax Advice - and one of our experts will be able to guide you through and review your return.
Happy tax filing!!