Introduction to the creation, delivery and analysis of multimedia content in systems with mobiledevices. Topics include analysis of webs of documents, social network analysis, recommendersystems and problems of trust, reputation and influence in mobile e-commerce systems. Topics covered:RESTful applications: architecture, JAX-RS, Jersey; Introduction to information retrieval: document structure and similarity; Introduction to (social) network science: types of social network structures and their structural analysis; Creation and analysis of webs of documents: web crawlers, pagerank; Introduction to social network data analysis: tools and simple data mining techniques;Recommender systems; Problems in social networks: trust, reputation, influence and community detection; Introduction to facial and fingerprint recognition; Multimedia content: recognition, transmission and similarity