Artificial Intelligence (AI) is a big field. In this course you shall get a glimpse of the manifold methods which have been developed in order to achieve what we call "Intelligent" or "Rational" Agents. Topics covered in this course comprise: History of AI, Agents, Logics, Heuristic Search, Planning, Game Theory, Machine Learning, Reasoning under Uncertainty. These intelligent methods gain momentum also and in particular in the context of the next generation of the web, where intelligent search and learning methods shall assist the user and facilitate machine to machine interaction.