Quantum computing promises to expand the frontiers of modern science by opening the doors to calculations practically impossible for classical computers. Quantum technology is made possible by the quantum bit (qubit), which takes advantage of the superposition of a two-level system, such as an electron or nucleus. In recent years, there has been an increased focus on molecular systems as candidates for qubits and eventual implementation in quantum technologies. Molecular spin qubits have the advantage of being tunable via chemical synthesis methodologies. The molecules can be rationally designed to possess ideal qubit properties and then scaled for Quantum Information Science (QIS) applications. Electron-spin based qubits can come in the form of transition metal ions, rare-earth metals (Lanthanides), organic radicals, and photoexcited state systems. One of the most highly-suited methods for studying the properties of electron-spin based qubit systems and manipulating them is Pulse Electron Paramagnetic Resonance (EPR) spectroscopy.