'The Commonwealth of Learning (COL) is an intergovernmental organisation, created by Commonwealth Heads of Government in 1987, to promote the development and sharing of open learning and distance education knowledge, resources and technologies.' (definition from the COL website)
Explore some of the courses which they have available below.
The Khan Academy is a non profit organisation which is founded in 2008 in the US. They provide free online educational resources for learners, teachers and parents. Explore what they offer by clicking on the link below.