This chapter provides a focused overview of the historical development and latest scientific advances that have shaped current understanding of graphene, particularly within the context of materials science, nanotechnology, and engineering. Graphene, a monolayer of sp2-bonded carbon atoms arranged in a two-dimensional honeycomb lattice, continues to attract significant attention due to its extraordinary intrinsic properties—high carrier mobility, quantum Hall effects, superior thermal conductivity, optical transparency, and exceptional mechanical strength. Its distinct chemical behaviour, especially in terms of asymmetric functionalisation and supramolecular interactions, further differentiates it from other carbon nanostructures. The discussion highlights ongoing research efforts addressing challenges in synthesis, scalability, defect control, and integration into functional systems. Emphasis is placed on emerging applications across electronics, advanced composites, and nanoscale devices, illustrating the convergence of fundamental research and technological development. By situating graphene within the broader landscape of two-dimensional materials, this introductory text aims to establish a framework for the in-depth analyses that follow in later chapters, while celebrating continued innovation and interdisciplinary collaboration in the field.