Resources

2 Peter and Jude: And Introduction and Commentary (Tyndale New Testament Commentary Series) (paperback)
Technical commentary.

Exploring the Epsitles of Peter (John Phillips Commentary Series) (hardback)
Technical commentary with applicational notes and illustrations.

2 Peter and Jude by John MacArthur (MacArthur New Testament Commentary Series) (hardback)
Technical commentary

Be Alert by Warren Wiersbe
Mainly applicational with some technical aspects

1 and 2 Peter Bible Study by John MacArthur (MacArthur Bible Studies)
Mainly technical, although in simple terms, with applicational aspects and questions.

The Message of 2 Peter and Jude: The Promise of His Coming by John Stott (Bible Speaks Today Series)
Technical commentary

1 and 2 Peter Bible Study by Max Lucado (Life Lessons Series)
Applicational and Bible study commentary