Quantum communication is an aspect of quantum information science, which is a study based on the fact that information sciences depend mainly on quantum effects in physics. It involves several experimental topics in quantum physics including computational models. It also covers areas of quantum physics that can be carried out using quantum information and those that cannot. In this script, you will learn about the various subfields that can be found under quantum communication. You will equally learn about the several applications of quantum communication to the day-to-day activities of humans. Also in this script, we will review the present state of quantum communication research and what the future direction is in this field of science. We are equally going to place special emphasis on quantum network as well as quantum key distribution.