@Cody Culberson Thank you Cody for the follow up. There are two things I would recommend you do (if you have not done it yet):
First, learn about your state laws regarding rental activities. There should be a dedicated page, or even a special book issued by the state for it. You need to know the laws in detail. The city you live in may have additional specific laws on top of the state laws. Make sure you check.
Second, I would recommend the book from Nolo "Every Landlords Tax Deduction Guide". The book will give you a good picture on taxes. Part of it will be useful prior to start, some of it when you start and the other part when you are fully in and you are looking for strategies to save on your taxes. So keep it really close. I also recommend Brandon Turner's book on Rental Property Management. That is a good one two.
A word of advice: given that the property is already paid for, you need more asset protection as you have more to lose if you get sued. Given that it is paid for, you should be able to have the property under a LLC. Make sure to have some important liability insurance as well.
Good Luck