The education landscape is changing quickly, and everyday there are better resources made available online to learn everything from underwater basket weaving to data science. Education technology is still in its nascent stages and companies and non-profits are still trying to pinpoint target markets and effective business models. While they do this many of their resources remain free.

These are the best places to learn for free online:

Khan Academy

Khan Academy has thousands of high quality videos on a wide variety of subjects. They try to make learning as easy and convenient as possible. Khan Academy aims to make education accessible by everyone, and their recent addition of SAT Prep is helping bridge the education gap.

Coursera

College costs a lot of money. Many of us are still paying our college loans. Now, thanks to Coursera, many of these college classes are available online for free. Coursera brings together the best courses from some of the best universities, including Yale, Harvard and Johns Hopkins University.

OpenCourseWare

Go to their website, type in the subject you want to study and there will likely be a class available on their aggregated collection of university courses.

YouTube

Don’t underestimate YouTube as a resource for finding useful lessons. It can be a great complementary resource for a more traditional course to help you learn more specific topics. There are some great channels out there for every subject you want to learn.

iTunes U

This app is available on all Apple devices and includes half a million courses for a wide variety of subjects for all experience levels. There are also quite a lot of social features to facilitate learning with others.

99U and Ted Talks

These sites are honorable mention because there not courses but 99U and Ted have thousands of videos of talks by true thought leaders on specific subjects. Great for finding inspiration.