This document discusses English for Specific Purposes (ESP) teaching materials. It explains that ESP emerged because general English was not always helpful in real-life job situations. ESP focuses on the specific language needs of students' fields and aims to prepare them for professional communication. The document evaluates factors to consider when selecting or creating ESP materials, such as tailoring materials to students' needs and levels. It also discusses advantages of electronic materials, such as flexibility, and the importance of evaluating and improving materials based on student and teacher feedback.