One Sun: A Guide Into Solar is a straight-to-the-point, no-fluff manual for anyone striving to obtain the coveted NABCEP PV Associate credential. This guide was crafted with the in-class student in mind. It does not serve as a standalone photovoltaic or solar installation guide; rather, it strictly focuses on the PV Associate exam from the perspective of a novice student. Therefore, if you aspire to pass the PV Associate exam but have little to no knowledge of the solar industry, then this guide is tailored for you.