Many students of the English language look for free ESL classes online. For many people who grew up in the last two decades, the online world has become a very familiar place where they can interact with a variety of people in a way that seems very natural and comfortable.
The reasons why students search for these types of classes are varied:
Adult second language learners often work full time in addition to keeping up with family commitments, so enrolling in traditional classroom instruction proves to be logistically difficult.
Some students who are enrolled in traditional settings need additional resources to supplement their classroom coursework in order to achieve English fluency at a quicker rate.
Others are simply more comfortable studying in an online environment.