Online learning has become a fundamental resource in today’s day and age. People carry an infinite amount of knowledge in their pockets, thanks to the internet. The internet has enabled us in ways which could have only been described as sorcery a few decades ago. In this modern era, self learning via the internet has become one of the revolutionary factors that has enabled us to educate ourselves using various platforms available anytime, anywhere. Self learning using our laptops or phones has become a very convenient way to acquire a new skill without the hassle of attending physical classes or paying a fortune. Some of the best online sites to learn in your convenience are as follows: 

Coursera

The best part about online learning is that you can take college classes that were previously only open to those who could afford to pay exorbitant fees to join prestigious universities. Coursera combines all of these classes into one location, with nearly 400 courses ranging from Berklee College of Music's Introduction to Guitar to Yale's Constitutional Law. Since these courses are supervised by a professor, they usually contain videos and some coursework (such as online quizzes) that must be completed in a certain period of time. Regularly visit to see what's new, or look for topics that pique your interest and add them to your watch list to be alerted when a new class starts.

Khan Academy

Khan Academy is a great place to learn, with over 3,000 videos on topics ranging from SAT prep to cosmology, art history to calculus. For ease of learning that fits into your schedule, detailed courses are broken down into smaller pieces of text or videos, and all are self-paced, allowing you to spend as much or as little time with the subject as you want. If you need more details or if anything in the lessons isn't obvious, you can also leave feedback or ask questions.

The OpenCourseWare Consortium is a global initiative to make course materials from colleges and universities freely available on the Internet. Look for a particular subject that interests you, or look for coursework by language (20 options) or source. There are over 5,000 English classes alone, ranging from mathematical thermodynamics (Middle East Technical University) to Epidemics in South African History (University of Cape Town) and Creole Language and Culture (University of Cape Town) (University of Notre Dame). 

ALISON

ALISON is a global learning resource that offers courses in English, French, and German on topics ranging from SAT prep to health and safety training needed in Ireland. There are lectures on everything ranging from study skills to copyright law in the United States, currency exchange to nonprofit fundraising, and general accounting to house buying negotiations. 

MIT Open Couseware

If you've always wanted to go to a prestigious university like MIT, you can now do the next best thing by taking many of its courses for free, in the comfort of your own home. The MIT Open Courseware platform has materials from a wide range of classes that can be searched by department. When you choose a course, you'll see when and by whom it was first taught, as well as the syllabus, course schedule, readings, assignments, and study materials. You can download the course materials and go at your own pace when taking it. 

Academic Earth

Academic Earth is a great place to look if you want to take a course that isn't offered by MIT. This free course aggregator has an impressive array of courses from more than 50 universities around the world. You may look for information based on a specific source or a broad topic. The curated playlists on subjects like natural laws, the origin of evil, and the economic crisis are not to be missed. The video electives are also a lot of fun, with topics like how to take a punch and why World War II made us fat. 

The Carnegie Mellon University Open Learning Institute

The Carnegie Mellon University Open Learning Institute provides access to a small number of course materials, allowing you to learn at your own speed from the same materials and self-guided tests that would be used in a classroom. Their options are minimal, but the coursework is extremely detailed. There are also occasions when instructor-led courses are open. 

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