I assume that by baptism you mean infant baptism, which does not need to be reversed as the process is just welcoming an infant into the church and the parents promising to raise the child as a Christian. It does not meany that the child has to become a Christian.
As for resources on Satanism, I'd suggest reading around. I'm assuming that you actually want to worship Satan so the Church of Satan is not what you're looking for (its basically atheism). I'd suggest looking around the internet, looking into Luciferianism and taking everything with a pinch of salt.