A massive open online course (MOOC /muːk/) is an online course aimed at unlimited participation and open access via the web.^[1] In addition to traditional course materials, such as filmed lectures, readings, and problem sets, many MOOCs provide interactive courses with user social media discussions to support community interactions among students, professors, and teaching assistants (TAs), as well as immediate feedback to the assignments. 

MOOC Courses are often offered for free, so we dont have to worry about the tuition.

MOOC can  give you the Access to courses offered by professors at the top schools, and it makes learning accessible to everyone and everywhere.

students can also replay the video if they want, so they can get more information than what is provided in the offline class.

MOOC also creates the opportunity for sharing ideas & knowledge and also helps improving lifelong learning skills by providing easy access to global resources.