Data is a set of facts, values or information which is collated and formatted in a manner that makes it easy to analyse. Everything we do these days forms a part of a database somewhere. New trends are observed and products tweaked to satisfy these trends. If we see that a particular lesson is being viewed more than the others, we try to see why and bring all the other lessons to a similar level. Even if you find the topic a bit dry and dark, we will soon enlighten you!