Nearly all of the important aspects of quantum information were introduced in the first chapter. But, this previous discussion probably leaves many still unsure about the various processes and how they are implemented to make quantum circuits. Thus, with this chapter, a rather deep dive into the quantum world will be presented in order to understand many of the topics, such as entanglement, qubit operations, many-body physics, and hopefully some quantum circuits used in computing and the information world. By the end of this chapter, it is hoped that the how of quantum information will be fully understood. We begin this discussion with a look into the strange world of entanglement.