This document provides an overview of methods for philosophizing and determining truth. It discusses the importance of truth and differentiating between knowledge, facts, claims, opinions and arguments. Systematic doubt is presented as a philosophical method for establishing truth by scrutinizing and analyzing statements. Examples are provided to illustrate applying systematic doubt to determine whether a statement is factual or an opinion. Fallacies in reasoning that can undermine arguments are also defined and exemplified. The document aims to teach philosophical thinking and analysis to discern truth from falsehood.