There are a number of questions that people often ask about whether there is truly a God, how we can know, what God is like. Following are links that address various questions.
Why did Jesus have to die? Couldn't man be saved another way? Why can't God just forgive without Jesus dying?
1. Am I Good Enough To Go to Heaven?
2. Why Doesn't Christianity Work for Me?
3. Salvation is Morel than You Know
4. Why Doesn't God do Something about Evil?
5. It is Hard to forgive others.
7. How to Stay Motivated for Jesus?
9. How Do I Make Good Choices?
10. What Does It Mean to Be Born Again?
11. How Do I Grow Spiritually?
What about those that have never heard of Jesus?
Articles: What About Those Who Have Never Heard? Letter to a 12-Year-Old About Heaven and Hell
Videos: What Happens to people who have never heard of Jesus?
What does God allow evil and suffering?
Video: How does a good God allow evil--Ravi Zacharias explains 4 minutes