This document synthesizes and extends relevant materials from the web on Nachos 5.0j, in particular, Narten’s “A roadmap through nachos, Hettena and Cox’s guide to Nachos 5.0j and Nachos C++ roadmaps by Qiao. The goal is to provide a one-stop place for Nacho 5.0j for students and instructors. In addition to discussing the internals of Nachos, we also provide code tracing examples and exercises.