The paper discusses the potential of exploitation of sign language (SL) monolingual or multilingual resources in combination with lately developed Web technologies in order to answer the need for creation of SL educational content. The reported use case comprises tools and methodologies for creating educational content for the teaching of Greek Sign Language (GSL), by exploiting resources, originally created and annotated in order to support sign recognition and sign synthesis technologies in the framework of the FP7 DICTA-SIGN project, along with a Wiki-like environment that makes possible creation, modification and presentation of SL content.