You should definitely read things on the subject, as it will help you have greater confidence in your ideas about there not being a god, and in the absurdity of Christianity. What would be best depends on your temperament and so forth, so I am hesitant to make any specific recommendations. Do your atheist parents have any suggestions, or do you not wish to talk with them about this for some reason?
And welcome to the forum!
And welcome to the forum!
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.