This document provides a step-by-step guide to course selection at NTUST. It first instructs students to log into the NTUST website and student information system. It then explains how to use the course inquiry system to search for courses by semester, year, time, and language. Students are shown how to copy course numbers and add or drop courses using the course selection system. The document also provides information on inter-university course selection, leave of absence, and contact persons for assistance.