Here's a nifty addition to our Lifehacker U roundup on online training courses: the University of New South Wales is offering its introductory computing science course online for free.
You won't get formal accreditation for the subject, but it's a good option for boosting your knowledge and working out if you want to pursue more formal studies. The course is being offered via the Open Learning site, and is said to require just five hours of study per week over 12 weeks. Get more details at the link below; the first course starts today!
UNSW Computing 1 [Open Learning]