Welcome to the STFC Introductory Summer School in Astronomy 2013, at the Queen Mary, University of London. The School is aimed at STFC-funded postgraduate students who are beginning PhD studies in astronomy and space science in autumn 2013. Our programme of lectures will provide a comprehensive overview of astrophysics topics from Solar System and planetary physics, through stars and galaxies, and on to cosmology. There will be sessions on PhD skills, outreach, and career planning. A wide range of social events will enable students to build networks with those working on similar topics throughout the UK.