That being said, you can understand Christianity and the Christian philosophy/worldview perfectly well without faith. You need faith in the capacity and work of the true and living God, the Lord Jesus, the Messiah in order to be saved from sin.
Intellectual understanding of the claims of Christianity and belief in its claims are totally separate.
This is one of the reasons you should speak to those who are competent teachers. You might try and ask Dr. James White if you have specific questions. I'm happy to continue the conversation here but the format is 'limiting' to say the least.