I am a Christian too, but I don't believe the shroud of Turin is the actual shroud of Jesus. Christianity is faith based, and those with faith don't need "physical" proof of the existence of God or Jesus. But I see nothing wrong with reading the book on the Shroud of Turin if you already have faith.
Hebrews 11:1 - Now faith is the substance of things hoped for, the evidence of things
not seen.:)
Love,
Madeline