Once you logged in click on the ‘e-File’ menu and click ‘Income Tax Return’ link. Fill in the asked details and submit it.
Then you can verify your ITR electronically and via physical verification. In the case of e-verification, you will not have to physically send your tax return to the Income Tax department.
After the return is verified, either via e-verification or physically, the income tax department will start processing your tax return. Once it is processed, the tax department will inform you of the same via e-mail.