The most effective thing that makes you a Christian is to nose the local churches and just look how they look inside, especially if you live in some old European town like me, and especially read the bible
What made me personally truly Christian was after some reading of the first book of Moses, I went to the new testament to really find out what is going on and I read Matthew 2:16-18 and compared that to that writing that was made hundred and thousands of years ago in Jesaja 31:15 and 1 Moses 35:19 and then it struck methat this actually happened, and that this part of the bible and that part of the bible was actually a divine revelation if anything