These two "books" are actually letters written by Paul to Titus and Philemon. The first (Titus) is a "pastoral letter" dealing with matters relating to church order. The second (Philemon) is a personal letter.
The reason for Paul writing the letter was to help Titus clear up some unfinished business. "The reason I left you in Crete was that you might straighten out what was left unfinished and appoint elders in every town, as I directed you. (Titus 1:5)
Paul then lists eighteen various qualifications for appointment of elders (Titus 1:6-9).
Paul next describes the false teachers Titus is likely to meet. He sums them up by saying - "They are detestable, disobedient, and unfit for doing anything good." (Titus 1:16)
Paul then states the basis for all Christian teaching "You must teach what is in accord with sound doctrine." (Titus 2:1)
"Remind the people to be subject to rulers and authorities..." (Titus 3:1)
"Since it is important for the ongoing witness and furtherance of the gospel, believers must be obedient to civil and governmental authorities, obey the civil law, be good citizens, and act as respectful neighbors. The only exception occurs when governmental law conflicts with Biblical teaching." (Donald Stamps)
"Grace be with you all."
This is a personal letter from "Paul, a prisoner of Christ Jesus..." (Philemon 1:1) to Philemon "dear friend and fellow worker" (Philemon 1:2) concerning Onesimus "who is my very heart." (Philemon 1:12)
This is the shortest of Paul's letters and a model of Christian humility.
"Therefore, although in Christ I could be bold and order you to do what you ought to do, yet I appeal to you on the basis of love. I then as Paul - an old man and now also a prisoner of Christ Jesus - I appeal to you for my son Onesimus..." (Philemon 1:8-16)
"The grace of the Lord Jesus Christ be with your spirit."