A JENAM 2002 Workshop, Porto, Portugal, 3-5 September 2002Interferometry Primers.- Interferometry Theory Primer.- Optical Interferometry A Practice Primer.- The VLTI and Other Interferometers.- The VLTI A Status Report.- Interferometry with the Large Binocular Telescope.- VLTI Instruments and Tools.- Introducing the Near Infrared VLTI Instrument AMBER to Its Users.- Preparation of the AMBER Integrations.- MIDI The 10 ?m Instrument on the VLTI.- Interferometric Observation at MID-Infrared Wave-Lengths with MIDI.- Genie The Darwin Demonstrator.- PRIMA for the VLTI Science.- The VLTI Calibrators Program: Getting Ready for High Accuracy Measurements.- 2D/3D Dust Continuum Radiative Transfer Codes to Analyze and Predict VLTI Observations.- Scientific and Technical Results from VINCI Using Coherent Estimation of Fringe Visibility.- Interferometric Science.- Probing the Close Environment of Young Stellar Objects with Interferometry.- Palomar Testbed Interferometer Observations of Young Stellar Objects.- Probing the Magnetosphere in Young Stars with AMBER/VLTI.- Unveiling the Launching Region of YSO Jets with Amber.- Imaging Stars and Their Environments with the VLTI.- Imaging with AMBER/VLTI: The Case of Microjets.- Pulsating Stars.- Cepheid Limb Darkening Models for the VLTI.- Prospects of High Angular Resolution Measurements of Binary Stars Properties with VLTI.- Interferometry: The Tool to Study Giant, Supergiant and Mira Stars.- Synthetic Radii and Visibilities for Pulsating Red Giants.- First VLTI Observations of Mira Stars.- Active Hot Star Shells.- The Wolf-Rayet Stars at High (Spatial) Resolution.- Extragalactic Astronomy with the VLTI: A New Window on the Universe.- Potential of the VLTI for Linking Stellar Frames to ICRF.- Distances on Cosmological Scales with VLTI.- The VLTI Future.- Long Range Science Perspectives for the VLTI.- Next Generation Instrumentation for the Very Large Telescope Interferometer.- Second Generation Instrumentation for the VLTl“+