The Really Useful #EdTechBook by Dr David Hopkins, Catherine Cronin. Author Dr David Hopkins, Catherine Cronin. More than this, however, is how the advances in technology, the economic and physical miniaturisation of computing devices, have impacted education: the students, the teachers, the classrooms, the spaces, the connections, the aspirations, etc.’The Really Useful #EdTechBook’ is about experiences, reflections, hopes, passions, expectations, and professionalism of those working with, in, and for the use of technology in education.