Want to know how to assess the usefulness of your open data? This lesson is your key to learning how to assess the formats of the data and how to improve it into richer formats. The e-learning is all about how to use the 5 Stars of linked open data to assess the usefulness of your open data and how to recognise the number of stars in a dataset. By the end of this e-learning, you’ll have a deeper understanding of the formats that may be more useful for your apps.