What are some good books that talk about early textual manuscripts? For example, a book that goes into detail on p52 and manuscripts like these to show early authorships and originals etc.
The Text of the New Testament, 4th Edition
By: Bruce M. Metzger
Oxford University Press / 2005
A Student's Guide to Textual Criticism of the Bible: Its History, Methods and Results
By: Paul D. Wegner
Inter-varsity Press / 2004
New Testament Textual Criticism
David Alan Black
Baker / 1994 / Trade Paperback
New Testament Text and Translation Commentary
Philip W. Comfort
Tyndale House / 2007
I like Comfort because he gives all the variants on the texts, quotes them in Greek text with a translation below, lists which translations use which reading. Then he gives his analysis of the variants and indicates which variant he prefers. This is a straightforward and easy-to-understand guide for pastors and lay people.
I second Dennis's recommendation of Comfort. It can be especially useful for the pastor laboring with limited time for preaching and teaching preparation.