chapter 1 Gravitational waves, theory and experiment (an overview) -- chapter 2 Elements of gravitational waves -- chapter 3 Gravitational-wave detectors -- chapter 4 Astrophysics of gravitational-wave sources -- chapter 5 Waves and energy -- chapter 6 Mass- and current-quadrupole radiation -- chapter 7 Source calculations -- chapter 8 Resonant detectors for gravitational waves and their bandwidth -- chapter 9 The Earth-based large interferometer Virgo and the Low Frequency Facility -- chapter 10 LISA: A proposed joint ESA–NASA gravitational-wave mission -- chapter 11 Detection of scalar gravitational waves -- chapter 12 Generalities on the stochastic GW background -- chapter 13 Sources of SGWB -- chapter 14 Infinite-dimensional symmetries in gravity -- chapter 15 Gyroscopes and gravitational waves -- chapter 16 Elementary introduction to pre-big bang cosmology and to the relic graviton background -- chapter 17 Post-Newtonian computation of binary inspiral waveforms -- chapter 18 Numerical relativity.