We use this book: https://www.amazon.com/Book-Managing-Rental-Properties-Screening-ebook/dp/B018W8HSP6
I don't have a specific recommendation; you might just start at the beginning. The production quality goes up over time, but most of the content is always valid. I think the main takeaway is there are so many styles of investing - you need to find what works for you and your goals. We own and rent nice condos because we have capital and are mainly concerned with creating passive cashflow. We're also committed to managing the properties ourselves. Part of that is for cost savings, but also a way to force the skills acquisition we need to be real estate investors.