This journal reviews the mindset of educators in Indonesia. Times have changed, technological developments have become more sophisticated, information flows so fast, but the mindset of educators has not changed much. Educators in the revolutionary era 3.0 are educators who act as facilitators. This means that educators cannot dominate the learning process. Students actively learn and educators facilitate the learning process. Meanwhile, educators in the revolutionary era 4.0 are students as teachers. In this era students can act as educators. Students become content creators, become producers, and become conductors. So what is the position of educators in the 4.0 revolution, educators must be able to activate, curate and develop learning resources with various digital channels. According to AECT (Association for Education and Communication Technology) learning resources are one of the keys to success in achieving learning goals. Based on these problems, this research is still very much needed. The type of research used is research and development (Research and Development). This study only looks at the feasibility and practicality of digital portals as learning resources for computer numerical control (CNC) machining techniques courses. The development of this learning product is arranged programmatically with a systematic sequence covering six stages, namely: literature study, development planning or design, product development, expert validation, trials, revisions, final product. The test subjects consisted of three material experts for the CNC machining engineering course, three learning design experts, three learning media experts, and a practicality test consisting of thirty students from the mechanical engineering education study program. Data about the quality of this development product is collected by questionnaire. The collected data were analyzed using qualitative descriptive analysis techniques. The research results show; (1) the expert test for the subject matter for the CNC machining engineering course is in the Valid qualification (91.67%); (2) the learning design expert test is in the Valid qualification (94.20%); (3) the media expert test is in the Valid qualification (94.52%); (4) test the practicality of digital portals as learning resources computer numerical control (CNC) machining techniques courses by student responses showed a level of practicality with a percentage of 95.8% in the very practical category. The results of this research study concluded that the digital portal as a learning resource for CNC machining engineering courses is feasible and practical to use in achieving student learning goals in the CNC machining engineering course in the Mechanical Engineering Education Department, Faculty of Engineering, Medan State University.