This document provides an introduction and overview of PSPICE, a circuit simulation software based on SPICE. It describes PSPICE's capabilities such as nonlinear DC analysis, transient analysis, and Fourier analysis. It outlines the types of circuit components that can be modeled in PSPICE such as resistors, capacitors, transistors. It also discusses key aspects of using PSPICE like libraries, subcircuits, file types and the basic steps for creating and simulating a circuit. An example of simulating an RC high pass filter is presented to demonstrate the use of PSPICE.