This book includes the basics of electricity followed by resistive series, parallel circuits and delta-wye conversion with the fundamental electrical laws. Node-voltage, loop-current and Network Theorems are included in detail to determine the circuit parameters such as total resistance, source current, voltage drop, and power absorbed. Most of the worked-out examples are verified by Multisim and PSpice simulations. A new software Automation Studio is also used to simulate examples. Operational amplifiers, first-order and second-order circuits will be discussed in detail. In addition to that the Laplace transform to solve circuit parameters will be included in this textbook. A quite good number of practice and exercise problems will be included.