Who was the author? Saint Paul is the divinely-inspired author of 2 Timothy.
What is the book? The book of 2 Timothy is the second of two apostolic letters to Paul's coworker Timothy.
Where was it written? Paul likely wrote 2 Timothy from prison in Rome.
When was it written? Paul likely wrote the letter between A.D. 65-67.
Why? Paul is said to have had three reasons for writing 2 Timothy: his being lonely, concerned about the churches under growing persecution, and wanting to communicate with the Ephesian churches.
How? In what was likely his last letter, Paul as moved by the Holy Spirit encourages Timothy to proclaim the message of God's grace in Jesus Christ, a message that some consider Timothy's inheritance from his "father" Paul in this Paul's "last will and testament". The letter in some ways prophesies about the end times in which we find ourselves living.
For further reading on the book of 2 Timothy:
- Knight, George W., III. The Pastoral Epistles, The New International Greek Testament Commentary. Grand Rapids, Michigan: William B. Eerdmans Publishing Company, 1996. (I own a copy of this relatively-recent commentary, with its 117 pages specifically on 2 Timothy, that you are welcome to borrow, but, while helpful, it definitely is a more-scholarly type commentary that, like all commentaries, needs to be read with discretion regarding what is valuable and what isn't.)
- Lenski, R. C. H. The Interpretation of St. Paul's Epistles to the Colossians, to the Thessalonians, to Timothy, to Titus and to Philemon. Columbus, Ohio: The Wartburg Press, 1946. (The scholarship is dated, but the comments are still helpful, and our Grace library this volume with its 148 pages on 2 Timothy.)