This paper integrates an overview of fundamental concepts on liquid propulsion systems and the ongoing propellant system work of Oregon’s Portland State Aerospace Society (PSAS). In Oregon, there are limited resources offered to students who want to find ways to directly connect to the aerospace industry. Students interested in this particular field will find they need to embark on independent investigative research before getting to work on a project of interest. Opportunities to study liquid propulsion specifically are even more rare, as it is a complex engineering endeavor versus the simpler design of the solid-state motor for launch vehicles (rockets). This paper will contain top level analysis for preliminary liquid propulsion design investigation as well as several appendices referencing propellant system diagrams, licensed open-source software available for students to use toward aerospace subjects, and links to Oregon based as well as national organizations dedicated to supporting students securing careers in the space industry. This document is intended to serve as a preliminary guide to one facet of the field of aerospace and rocketry, and attempts to provide holistic guidance for an accessible approach to liquid propulsion technology.