Here's some TurboTax guides and videos on Rentals
https://turbotax.intuit.com/tax-tips/rental-property/
What kind of Rental expenses can I deduct?
https://ttlc.intuit.com/community/credits-and-deductions/help/what-kinds-of-rental-property-expenses-can-i-deduct/00/26372
What is Depreciation?
https://ttlc.intuit.com/community/rental/help/what-is-rental-depreciation-and-how-does-it-differ-from-an-expense/00/26371
IRS publication 527 on Rental Property….
http://www.irs.gov/pub/irs-pdf/p527.pdf