Right now, I've mostly learned more about the Cosmological arguments and the Teleological arguments, as well as the tendencies of nature. Another thing that I've found fascinating is that the Big Bang, in and of itself, actually supports Theism rather than Atheism. I've also learned about how many of the counterarguments that Atheists use are actually self-defeating.
For example:
Person 1: "All truth is relative?"
Person 2:"Is that truth relative?"