I'm seriously thinking about joining the church but I come from a not so religious family. I just want to learn as much as possible before I take that leap of faith.
One proof of God's existence that most people give is the Bible, which tells of God. Another common argument is that the world is too complicated for everything to have happened by accident. You may not find these arguments persuasive, but they are common.
I want to echo other editors here is expressing my belief that the existence of God has to be a matter of faith for the individual and that this is what God himself wants. If it were obvious that, God did exist, we would all obviously believe, but we would not be choosing to believe out of faith. God doesn't want a relationship with us based on compulsion or coercion and so having an element of doubt ensures that we come to God by our own choice.
I am not able to figure out which particular arguments supporting or refuting God's existence you are referring. But I can say one thing: if God's existence could be proved beyond all doubts, almost every one in this world would be a believer.
There are no proofs of gods existence. There are just indications and hints that point out to a power which supersedes the power of everything else than cab be proved.
Somewhere else in the eNotes discussion board I had seen the analogy of "proof of pudding being in eating" to prove the existence of God. I would like to use this analogy in a different way. You can start making efforts to follow the teachings of Jesus Christ, and if you find that it makes you happier, gives you some satisfaction, or makes you a better person, you know that you are on the correct path. This is the path of God. Please note that joining a church may help you to follow the advice of Jesus Christ, but it is not essential for that. As a matter even believing in God is not necessary to follow the advice of Jesus Christ. At least not 100% of what Jesus says. You can start with only those parts that do not require faith in God. If you do that, may be one day you may want to try out other parts of His advice also.
There are no genuinely provable arguments for the existence of God. Because he is 'not present' in every single testable way. You cannot make an argument that proves his existence because he does not exist in any practical sense of the word..
But some people say "look at how complex the world is, there must be a perfect and good creator." but that is a false conclusion, because 1) The world is not perfect 2) The world is not good and 3) Science can explain how everything was formed without a need to include a creator. If God is all powerful and all knowing, why are there so many terrible natural things like epidemics that kill millions of children etc etc. What is 'good' about creating smallpox and cholera?
And why, if you are interested in finding God, are you only thinking of joining the Church? There are 1000s of religions in the world. Why pick Christianity? Is it more right than Shintoism or Buddhism? Why not pick Islam or Judaism? Zoroastrianism? Arianism? Rastafarianism? Sikhism? etc etc...