This textbook provides a compact but comprehensive treatment that guides students through the analysis of circuits, using LTspice ^(R). Ideal as a hands-on source for courses in Circuits, Electronics, Digital Logic and Power Electronics this text focuses on solving problems using market-standard software, corresponding to all key concepts covered in the classroom. The author uses his extensive classroom experience to guide students toward deeper understanding of key concepts, while they gain facility with software they will need to master for later studies and practical use in their engineering careers.