I remember what I challenged when I was 13: the trinity and the Bible. Truly, it is good to hold a position and preach against others, but there are more worthwhile issues to research and spread. A good moral foundation is necessary in life. I highly recommend Buddhism, whose teachings on the importance of merit in ensuring a happy life are entirely in keeping with your message.
For your reading pleasure I enclose these 2 links:
They should contain all that is needed to introduce you to Buddhism.
Let us join together against those who would try to seek without striving!