E-learning includes various forms, methodologies, techniques and procedures related to the electronic distribution of educational content. E-learning is in stark contrast to the traditional classroom learning model [2]. In contrast to whiteboard-based content delivery, instructors who engage in e-learning use computers, tablets, and the Internet to deliver lessons to their students. The use of audio-video tools to deliver a lesson over the Internet is also not uncommon and it is known that teachers constantly use webcams, recording and audio editing tools to improve their lessons, communicate with their students, hold office hours and sometimes also to add a more personal touch to the online lesson. From the student's perspective, an e-learning educational experience could be self-directed or educator-controlled. A typical self-paced e-learning session consists of a pre-recorded video or presentation that is uploaded by the course instructor to the web server. Students can play, pause, rewind, stop, and then view the video or presentation multiple times until they feel comfortable with the topic. A self-paced course allows students to study a topic at their own pace. Students can then set their own schedule for when they want to review course content or take a test, etc. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay A self-paced e-learning model is suitable for working professionals who attend classes part-time while trying to achieve a balance between their professional activities and academic responsibilities. A teacher-controlled e-learning model is a deadline-based model in which the course administrator sets deadlines for all tasks that students must complete to pass the course. These assignments typically include homework, quizzes, midterm exams, discussion board posts, etc. In recent years with the rapid progress made in the field of audio-video technology, e-learning has been able to venture outside the confines of the classroom walls and into the field [1]. Now, teachers can record or even live stream video of a field trip directly to their students. This is especially useful for explaining concepts that require visual explanation. Therefore, a classroom instructor may be able to stream a lecture from a geologic site to show students the soil and rock formation. Students learn more by watching than by reading, and a video like this will go a long way in helping them understand the concepts they read about in their textbooks. Field trip videos are not only educational, but they are also interesting and therefore can play a vital role in keeping students engaged and attentive. Therefore, e-learning can take place in the classroom or in the field. E-learning offers flexibility in terms of time and geographic location of the educator and student. Since it is web-based, the course instructor does not necessarily need to be present in the classroom to deliver the course. In fact, a course instructor can simply use any leading learning management system and deliver a course from any location with internet connectivity. All an instructor needs is a webcam and a laptop. Likewise, students can register and take a course from anywhere in the world. Unlike conventional classrooms, you do not need to be physically present in the classroom at a specific time. This flexibility.