I like your question, simply because I am a bookworm myself. I know many people will tell you the normal books to get you started, putting yourself in the mindset for a mind shift, that real estate investing requires. Books like Rich Dad Poor Dad and the Millionaire Next Door.
Although, those are great books I will tell you a few that you may not have heard about... The BRRRR Rental Property Investment Strategy Made Simple, Grit: The Power of Passion and Perseverance, The Millionaire Real Estate Investor, Retire Early with Real Estate, HOLD, Landlording on AutoPilot, The Book on Managing Rental Properties and ABCs of Real Estate Investing these are just a few that I have read that have to deal specifically with buying and holding properties.
I hope that this helps, even in the slightest. Let me know if you've read any of these books before.