The Gospel Coalition has book recommendations for church planters from J.D. Greear, Tim Keller and many others:

Every planter needs books—companions and guides for the journey. Whether thinking through philosophy of ministry or structures of polity or specifics of strategy, good literature can cast vision, steel resolve, and replenish empty tanks. But with so many books clamoring for your attention as a planter, it’s easy to feel overwhelmed. It’s not like you have much spare time.