Part I: Fundamentals and Tutorials.- Basic Knowledge in STED Nanoscopy (A. Egner, C. Geisler, and R. Siegmund).- Basic Knowledge in Coherent X-ray Imaging (T. Salditt, A.-L. Robisch).- Basic Knowledge: X-ray Focusing & Optics (T. Salditt and M. Osterhoff).- Statistical Foundations of Nanoscale Photonic Imaging (A. Munk, T. Staudt, and F. Werner).- Inverse Problems (T. Hohage, B. Sprung, and F. Weidling).-  Proximal Methods for Image Processing (D. R. Luke).- Part II: Progress and Perspectives.- Quantifying the Number of Molecules in STED/RESOLFT Nanoscopy (J. Keller-Findeisen, S. Sahl, and S. W. Hell).- Metal-Induced Energy Transfer Imaging (A. I. Chizhik, and J. Enderlein).- Reversibly Switchable Fluorescent Proteins for RESOLFT Nanoscopy (N. A. Jensen, I. Jansen, M. Kamper, and S. Jakobs).- A Statistical and Biophysical Toolbox to Elucidate Structure and Formation of Stress Fibers (B. Eltzner, L. Hauke, S. Huckemann, F. Fehfeldt, and C. Wollnik).- Photonic Imaging with Statistical Guarantees: From Multiscale Testing to Multiscale Estimation (A. Munk, K. Proksch, H. Li, and F. Werner).- Efficient, Quantitative Numerical Methods for Statistical Image Deconvolution and Denoising (D. R. Luke, C. Charitha, R. Shefi, and Y. Malitsky).- Holographic Imaging and Tomography of Biological Cells and Tissues (T. Salditt, and M. Töpperwien).- Constrained Reconstructions in X-ray Phase Contrast Imaging: Uniqueness, Stability and Algorithms (S. Maretzke, T. Hohage).- Scanning Small-Angle X-ray Scattering and Coherent X-ray Imaging of Cells (T. Salditt and S. Köster).- Single Particle Imaging with FEL using Photon Correlations (B. von Ardenne and H. Grubmüller).- Development of Ultrafast X-ray Free Electron Laser Tools in (Bio)Chemical Research (S. Techert, S. Thekku Veedu, S. Bari).- Polarization-sensitive Coherent Diffractive Imaging Using HHG (S. Zayko, O. Kfir, and C. Ropers).- Nonlinear Light Generation in Localized Fields Using Gases and Tailored Solids (M. Sivis and C. Ropers).- Wavefront and Coherence Characteristics of Extreme UV and Soft X-ray Sources (B. Schäfer, B. Flöter, T. Mey, and K. Mann).- Laboratory-scale Soft X-ray Source for Microscopy and Absorption Spectroscopy (M. Müller and K. Mann).- Multilayer Zone Plates for Hard X-ray Imaging (M. Osterhoff and H.-U. Krebs).- Convergence Analysis of Iteraive Algorithms for Phase Retrieval (D. R. Luke and A.-L. Martins).- One-Dimensional Discrete-Time Phase Retrieval (R. Beinert and G. Plonka).