Whenever we learn we develop our understanding but when self-learning and tutoring are available, while based on advanced and deep knowledge, the entire knowledge system prevails. Let's remember that "Bloom's 2 sigma problem refers to the educational phenomenon that the average student tutored one-to-one using mastery learning techniques performed two standard deviations better than students educated in a classroom environment". eLearning, certifications, and self-learning are the characteristics of EdTech.