This paper presents a brief overview of the e-learning concept, elearning history, technology and future, Virtual Classes, adaptive e-learning and case study. The development in the cyber learning is being so rapid in these systems. The features of adaptive learning are emphasized by comparing it with the other elearning systems. It is clear from the paper that adaptive learning has various aspects and will lead to a new era in learning. Using the best suitable e-learning tool depends on the learning group and the space of learning. Adaptive learning enhances the learning ability by customizing the learning objects to the student needs and mapping it directly to the learning domain
