This book serves to familiarize students with the methodology employed in scientific research across public health, business, education, and social sciences. Drawing from lecture notes, it caters to students, junior researchers, and professors teaching research techniques courses, while also serving as a handy reference for seasoned researchers. Unlike solely focusing on research methods, it comprehensively covers the entire research process from inception to conclusion. While the research approach is a pivotal stage, the book emphasizes that it's just one component within a structured and holistic framework, ensuring a thorough understanding of the research journey.