We would like to claim income and expenses related to our apartment in the basement, where do we enter this?

Thank you for choosing TurboTax. You can claim rental and expenses on Form T776. You can include rent collected from tenants as rental income in the current tax year. If you rent out the basement in the building that you live in, you can claim only the portion of your expenses that relate to the basement. 

Here are the links you might find useful:

• Claiming Expenses on Rental Properties 
• T776 Tax Forms: Statement of Real Estate Rentals 
• Claiming Rental Income