There is a printable version of this page here.
Here are a selection of online resources for learning and general interest. Some are general and some provide very specific and sometimes advanced study. This will be updated from time to time. This is just a selection of courses available. There are too many to list them all.
edX
it is a platform that provides over 300 online courses from over 60 academic institutions including several prestigious Universities such as UC Berkeley, Massachusetts Institute of Technology, Harvard and Stanford. Courses are free. Most provide a certificate but you are not obliged to do the graded quizzes and assignments to earn a certificate. You are welcome to just watch the videos (audit the course). Courses cover a very wide range of topics from the Ancient Greek Hero to Principles of Written English to Combinatorial Mathematics. Courses run to a timetable with weekly lectures and quizzes. Courses vary from 4 to 10 weeks long and the weekly commitment can vary from 3 to 15 hours per week (if you do the quizzes and assignments). You need to create a personal account to access courses.
http://www.edx.org/
FutureLearn
is another MOOC platform founded in December 2012 as a company wholly owned by the Open University, UK. It is the first UK-led MOOC platform, and as of March 2015 included 54 UK and international University partners and--unlike similar platforms--includes four non-university partners: the British Museum, the British Council, the British Library and the National Film and Television School. Auckland University is also a partner.
http://www.futurelearn.com/
MIT Open Courseware
provides over 2000 online courses from Massachusetts Institute of Technology. Undergraduate and graduate programs that are run at MIT are available for download, many of them free. Many of their courses are also available on edX. You don't need to create an account to download courses. Course quizzes and exams are available but they are not graded. You can choose to work through them or just watch the videos. Many of the courses also use a text book. Courses are provided under the Creative Commons Attribution-Non-commercial-Share Alike license.
http://ocw.mit.edu
Udacity
provides course in computers and technology. Fees are charged, typically US $ 200 per month.
https://www.udacity.com/
iTunes U
is an online “university” designed for the iPad. It is designed for qualifying schools, colleges and universities to distribute courses.
http://www.apple.com/education/ipad/itunes-u/