Stanford University
Stanford Encyclopedia of Phil.: Ontological Arguments
Overview from the Stanford Encyclopedia of Philosophy of the structure and history of ontological arguments for the existence of God. Lists the major attempts (and includes extensive bibliography for them), then describes the various...
Other
R. B. Jones: The Philosophy of Logic
Excellent overview of logic. Defines the term in informative detail, while relating logic to its neighbors in epistemology, metaphysics, and analytic philosophy. A terrific introduction to the subject.