Sarah and Mostly-Math were extremely helpful with my University Discrete Mathematics course. I struggled greatly with the assigned text and my course tutor offered no useful assistance in comprehending the material. Sarah was not only able to break down the material and frame it differently for my comprehension but also recommended supplemental texts which were more valuable than those assigned by my university. Additionally, Sarah went above and beyond to help with assigned problems which required her own personal time to solve and provide me with the answer. I highly recommend Sarah and her Mostly Math colleagues. Thanks again Sarah.