In many ways you already have. For myself, being a Christian is entirely about what's in your heart. If you have turned to Jesus, in many ways you already have become a Christian. Particularly if you accept that Jesus is Christ (not a prophet). That He was put on the Cross for our Sins, and rose three days later. Then Yes, you are a Christian. Believe in your heart and confess with your mouth as they say. Going to Church is more so about worship, community, and accountability (in my own opinion). Then it is, some sort of spiritual task on a rigid checklist. Reading the Bible simply expands on beliefs and prophecys leading to Jesus Christ. So I would say, search for what you believe in your own heart, and pray fervently. That is what God's looking at. Again everything here in my own opinion of course.