This book provides a clear and structured introduction to Signals and Systems, designed for undergraduate students and beginners. It builds from essential mathematical foundations to core topics like continuous and discrete signals, system properties, LTI systems, and key transforms such as Fourier and Laplace. Using a student-friendly question-and-answer approach, along with examples and exercises, it helps readers connect theory with practical applications. Compact yet comprehensive, the book focuses on developing strong conceptual understanding, analytical thinking, and problem-solving skills.