A new language MOOC, aimed at native Spanish speakers and foreign students with an advanced level, has been developed within the E-LENGUA Project to focus on the proper use of the Spanish language. The design is based on a cMOOC – xMOOC hybrid format and aims to combine a convenient and familiar structure with the necessary flexibility to allow for an independent and customized training, as well as a strong social component. Therefore, its ultimate goal is to develop a learning community where both types of speakers contribute significantly to make progress in language proficiency and in understanding how language works.