Sproul's Crucial Questions Series [kindle] free for a limited time

1. Who Is Jesus?: 1 (Crucial Questions Series) by R.C. Sproul and #1 in the Crucial Questions Series (May 31, 1983)

2. Can I Trust the Bible?: 2 (Crucial Questions Series) by R. C. Sproul (Sep 18, 2009)

3. Does Prayer Change Things? (Crucial Questions Series): 3 (Crucial Questions (Reformation Trust)) by R. C. Sproul (Nov 30, 1998)

4. Can I Know God's Will?: 4 (Crucial Questions Series) by R. C. Sproul (Nov 30, 1998)

5. How Should I Live in This World?: 5 (Crucial Questions Series) by R.C. Sproul (Nov 30, 1998) 

6. What Does It Mean to Be Born Again?: 6 (Crucial Questions Series) by R.C. Sproul and Greg Bailey (Sep 15, 2010)

7. Can I Be Sure I'm Saved?: 7 (Crucial Questions Series) by R. C. Sproul (Aug 16, 2010)

8. What Is Faith?: 8 (Crucial Questions Series) by R.C. Sproul and Greg Bailey (Oct 15, 2010)

9. What Can I Do With My Guilt?: 9 (Crucial Questions Series) by R.C. Sproul (Jul 15, 2011)

10. What is the Trinity?: 10 (Crucial Questions Series) by R.C. Sproul (Jul 15, 2011) 

11. What is Baptism?: 11 (Crucial Questions Series) by R.C. Sproul (Aug 24, 2011)

12. Can I Have Joy in My Life: 12 (Crucial Questions Series) by R.C. Sproul (Nov 21, 2012)

13. Who is the Holy Spirit?: 13 (Crucial Question s) by R.C. Sproul (Nov 1, 2012)

14. Does God Control Everything?: 14 (Crucial Questions Series) by R.C. Sproul (Nov 21, 2012)