Discover purpose (a.k.a. Four Spiritual Laws)
Questions.org – Answer to Tough Questions About God and Life
Crown Ministries 
Breakpoint – originally founded by Chuck Colson 
Insight for Living Ministries – Chuck Swindoll
Ravi Zacharias International Ministries – Difficult questions. Thoughtful Answers. 
Answers in Genesis 
David Jeremiah – Turning Point
Samaritan’s Purse – International Relief 
Gospel “Bridge” diagram (click below to see the full size version)
Bible Study: The places in the Bible where specific prayers were answered “Yes”. Word version. PDF version.
Nice Bible maps resource, Bible Atlas