There are so many good books out there, it’s hard to give less than 100 suggestions. I'll give you lots of suggestions, but...
Here’s my very first suggestion: read the Bible.
Before you read what people think about God, see what his words says about himself.
Book List 2025
This contains all our current recommended books: 146 of them!
If you read every book on this list you would level up.
Pretty much any book by C.S. Lewis, A.W. Tozer, J.I. Packer, Hank Hanegraaff, John Piper, Gary Habermas, Dallas Willard, or N.T. Wright, and anyone at Reasons to Believe would be good. That doesn’t mean I agree with them on all points – I definitely don’t. But, they are relatively deep thinkers, solid theologians, and orthodox..