Emily,
With regard to your first comment: I believe you can know for sure there is a God and that is through a personal relationship with *****. When, by faith, you trust Him as your Savior His Spirit gives you that assurance. Also, the Bible says Jesus is God, and we have eyewitness to Jesus' life and ministry on earth. Christian and secular historians have written about it. The best explanation for the fulfillment of his prophecies and miracles than the fact that he was God. If you thoroughly researched both sides, of the argument, I think you would find it takes more faith to be an atheist and agnostic than a Christian. But, as I and I'm sure others can tell you, the best evidence for Christ is the continuing work He does in individual lives.
Oh, and don't expect to find a sympathetic ear on secular college campuses and universities. IF I may quote the apostle Paul in his letter to the Romans: "Although they claimed to be wise, they became fools and exchanged the glory of the immortal God for images made to look like mortal man and birds and animals and reptiles.... they exchanged the truth of God for a lie, and worshiped and served created things rather than the Creator - who is forever praised. Amen.
Remember, the narrow way leads to everlasting life, and "few there be that find it."
John, 26, cf