Programming paradigms are different ways of organizing and writing code based on how problems are approached and solved. Procedural programming focuses on step-by-step instructions and structured sequences of tasks. Object-oriented programming (OOP) organizes code into objects that combine data and behavior, making it easier to manage larger and more complex applications. Functional programming takes a different approach by emphasizing pure functions, immutability, and predictable outcomes. This guide explains the core ideas behind each paradigm and how they influence the way modern software is designed and developed.