The Statistical Consulting Unit recommends this list of online courses.
There are many different options. Your choice depends on what exactly you want to get out of a course: a broad understanding of statistical theory, a knowledge of how statistical methods work, or tutorials on how to use particular software for particular techniques.
In the first case, you could try the following Coursera offerings.
The following sites are more resources than courses, focusing on tutorials on how to use particular software for particular techniques.
For more information, or to find information about the SCU's own online courses, please visit our website.