If you want to check out well-prepared and easy-to-read arguments for the existence of God, I recommend Existence of God.
Tim was an atheist until he studied philosophy at university to post-graduate level, but he found the evidence and the philosophical arguments so persuasive that he was convinced of God’s existence. He is now a christian, and has set up his site to present the same arguments to others.
He covers all the standard arguments for God’s existence – first cause, design, moral, ontological and two arguments about Jesus – and also considers five arguments for atheism. If you want a simple statement of complex arguments, I recommend it.