This lecture covers the intrinsic and extrinsic electronic perturbations in organic materials, including vibronic coupling, light-matter interaction, charge formation, and transport mechanisms. It delves into the preparation of organic semiconductor materials, basic organic electronic devices, and advanced topics like defects, sensors, bioelectronics, and sustainable electronics. The discussion extends to magneto-optoelectronic devices and spintronics, emphasizing the interplay between electronic and nuclear motions in molecules.