How do I account for the money I put in to my rent house in improvements and expenses in 2017?

I bought a house in 2017 that I intend to rent but I am still making improvements and won't make it available to rent until May 2018. This will be my first rental property. I created a single entity LLC for the rent and expenses associated with the property.  Since I didn't make it available for rent in 2017, how do I account for the money I put in to it in improvements and expenses in 2017?  Turbo Tax tells me Schedule E needs rental income in 2017 in order for me to enter my expenses. Secondly, I have a 1099-INT for $500 on my LLC checking account from a promo I got at the bank.  Where do I enter this income?