MOOC Platform openHPI

Although the course library is fairly limited, openHPI provides a good source of free courses specifically geared towards those who want to increase their knowledge of the digital world. With courses provided by Hasso Plattner Institute, one can only expect good quality which is what you'll get. It's a shame, however, that most courses are in self-paced mode which means you cannot do the assignments or gain a Certificate of learning.