Lectures:

1. Can You Lose Your Salvation? - Dr. Walter Martin

2. Legalism and Predestination - Dr. Walter Martin

Literature:

1. Evangelical Dictionary of Theology by Walter A. Elwell

2. Systematic Theology Volume 3 by Norman Geisler

3. Essential Christianity by Dr. Walter Martin

4. New Believers Bible by Greg Laurie

5. New Dictionary of Theology by Martin Davie and Others

Articles:

1. What is Salvation All About? - crossexamined.org

2. 7 Reasons Why Baptism is Not Required for Salvation - crossexamined.org

3. What is the Christian Doctrine of Salvation - gotquestions.org

Videos: 

1. What is Salvation - GotQuesitons

2. What is the Way of Salvation? - GotQuestions

3. What Are the Steps to Salvation? - GotQuestions