Part I.- Theory and Models.- Magnetorotational Turbulence, Dynamo Action and Transport in Convective Disks.- An Energetic Criterion for Astrophysical Winds and Jets.- Meridional Self-Similar MHD Relativistic Flows Around Kerr Black Holes.- Part II.- Simulations.- Modelling the Accretion on Young Stars, Recent Results and Perspectives.- Radiation Magnetohydrodynamic Models and Spectral Signatures of Plasma Flows Accreting onto Classical T Tauri Stars.- Mass Accretion Impacts in Classical T Tauri Stars: A Multi-Disciplinary approach.- High Energy Emission from Shocks Due to Jets and Accretion in Young Stars with Disks: Combining Observations, Numerical Models, and Laboratory Experiments.- On the Origin of the X-ray Emission in Protostellar Jets Close to the Launching Site.- Simulating Accretion and Outflow Regions in YSOs.- Modeling Jet Launching from Accretion Disks.- Relativistic 3D Hydrodynamic Simulations of the W50-SS433 System.- Knots in Relativistic Transverse Stratified Jets.- Part III.- Observations and Experiments.- ALMA Polarimetric Studies of Rotating Jet/Disk Systems.- Analysis of the Physical Properties of Jets/Outflows in T Tauri Stars.- X-Shooter Survey of Jets and Winds in T Tauri Stars.- Accretion Bursts from Young Stars.- The Musca Molecular Cloud: An Interstellar Symphony.- Laboratory Astrophysics at Extreme Light Infrastructure - Nuclear Physics.- Part IV.- Future Projects.- GIARPS/GRAVITY Survey: Broad-band 0.44-2.4 Micron High-Resolution Spectra of T-Tauri and Herbig AeBe Stars. Combining High Spatial and High Spectral Resolution Data to Unveil the Inner Disc Physics.- Observational Constraints on the Conservation of Momentum and Energy in Jet-driven Molecular Outflows.- Part V.- A Tribute to K. Tsinganos.- A Short Tribute to Kanaris Tsinganos, Conclusions to This Book.