String Theory is our best candidate for the unification of all fundamental forces, including gravity, in a consistent quantum framework. This work deals with this subject including topics such as the gauge/gravity correspondence, superstring cosmology and cosmic strings, topological string theory, and more. It is useful for students and experts.

Lectures.- Strings in a Landscape.- Quantization of Holomorphic Forms and = 1 Supersymmetry on Special Manifolds.- Loewner Chains.- Theory of Cosmological Perturbations and Applications to Superstring Cosmology.- Towards a Topological String.- Challenges of Matrix Models.- Phenomenology of Neutrino Oscillations.- Closed Strings in Misner Space: A Toy Model for a Big Bounce?.- Phenomenological Guide to Physics Beyond the Standard Model.- to Cosmic F- and D-Strings.- Long Time Scales and Eternal Black Holes.- Semiclassical Strings and AdS/CFT.- Seminars.- Baryogenesis with Large Extra Dimensions.- Braneworld Cosmology Almost without Branes.- Chaotic Cascades for D-Branes on Sigularities.- = 1 Gauge Theory Effective Superpotentials.- Gromov-Witten Theory and Automorphic Forms.- Black Hole Instabilities and Phase Transitions.- Probing Singularities.- Inflation Unloaded.- D-Brane Effective Actions.- ADS2 × S2 as an Exact Heterotic String Background.- Strings and D-Branes in Holographic Backgrounds.- Cosmic Censorship in ADS/CFT.- Topics in Black Hole Production.- Towards the Exact Dilatation Operator of = 4 Super Yang-Mills Theory.- Moduli Trapping and String Gas Cosmology.- Stringy Geometry: Generalized Complex Structure.- Integrability of Superconformal Field Theory and SUSY N=1 KdV.