The following is an email reply I sent to one of my students regarding recommendations for books as he prepares for a couple of years from now to enter full-time ministry. I thought others might benefit from this as well.
Take note of syllabi. They often include such works we have found beneficial. While we will include other works there are some listed there that would aid you (depending upon the subject matter and your interest and calling).
Commentaries. I would encourage you to purchase and read several commentaries for each sermon series you do in ministry. There are resources to help in sifting commentaries that may be most beneficial and we’re all willing to make such recommendations as needed.
Preaching. I’d encourage you to just work through one or two (at least) books a year on some aspect of preaching. Find a friend to discuss these with and consider even buying a copy for them. Also, don’t forget to consider how you are applying what you read. 🙂
Theology. Find books on various aspects of theology to read and reflect on. Read classics and older works like Church Fathers who were both pastors and theologians: Tertullian, Augustine, the Cappadocian fathers, Ephrem the Syrian, etc. And read historical theologians like Aquinas, Luther, Calvin, Barth, etc…all of whom also had pastoral care in mind. And read contemporaries who do likewise like Eugene Peterson, N. T. Wright, etc.
There are numerous other things you shouldn’t ignore that I’m not listing like missions biographies and theologies, theological/bible dictionaries, high literature (like the classics), popular literature (I’m thinking whether fiction or non-fiction), pastoral care, classic devotional works (like Thomas a Kempis), etc. Read widely. Read well.
Acquire resources that will serve you for the long term rather than consuming only whatever seems fad-ish. And all of these are really things to particularly engage over a lifetime rather than simply to purchase now (you can’t afford it in money or time, but in the long run you will slowly gain what you should). I’d encourage you to engage any given professor you are taking classes from about any specific works they might recommend on that topic beyond the required readings. 🙂
Blessings on the journey.