• It is an excellent way of keeping in touch with family and friends staying at distant places.

• A very reliable and fast connection is needed all the time to conduct video conferencing.
• Even with a fast connection, there might be a slight delay between responses that can disrupt the natural flow of conversation.
• The major disadvantage is the technical difficulty associated with it, that is software, hardware, or network failure. It may disrupt the flow of the meeting.
• High quality dedicated video conferencing systems are expensive to buy.
• People could be in different time zones around the world. The chances are that some people may have to stay back during odd hours in the night to attend the meeting.

E-Learning means "Electronic Learning". It refers to a wide range of applications and processes, designed to provide guidance and/or deliver information to students, faculties, or employees of the companies through electronic means. The quality of the electronic training depends primarily on the content and its delivery. It also provides facility to download study materials from various universities. This way Internet acts as a global library for us.

The study material can contain various types of media, like audio, text, virtual environments, video, and animation. Users have the advantage of learning in a three-dimensional environment that provides a more interactive and interesting experience. E-Learning can be imolemented using an Internet connection, a network, an intranet, or a storage disk.

All over the world, various universities like Harvard, MIT and even IIT's have launched programs focused on offering classes online for free. In India, GyanDarshan, which is a satellite-based educational channel, offers educational programmers for a wide range of users, such aa school kids, college and university students, homemakers etc.

Apart from Open and Distance Learning, mobile learning, e-learning, Open Education Resource (OER), Massive Open Online Course (MOOC), etc., are being accepted as alternative approachers or methods.

Various websites that are used for e-learning are Coursera, edx, National Programme on Technology Enhanced Learning (NPTEL), etc.