Gathered together here are links to 4 standard arguments for the existence of God (there are others). Each one is in the form of a separate post on this website and comprises about 1 page of text.

1. The teleological argument


2. The cosmological argument


3. The moral argument


4. The ontological argument

For an academic exposition on the existence of God by W.L.Craig (a brillliant Christian philosopher who is also an expert on cosmology, quantum mechanics and elementary particle physics) listen to the podcasts on his website. The students ask searching questions, ones which you may ask yourself, and he  deals with them soundly and by academic, scholarly standards.