Introduction to GUTs and supersymmetry, A. Masiero; neutrino physics, A. Smirnov; heavy quark effective theory, G. Thompson; fermion masses, mixings and ansatzes, S. Raby; introduction to trinification, Q. Shafi; introduction to topological defects and applications, L. Perivolaropoulos; non-perturbative electroweak effects in baryogenesis, M. Shaposhnikov; computational studies of instanton induced baryon number violation, C. Rebbi; B physics at OPAL, S. Lloyd; perspectives in nuclei physics with attention to experimental projects, S. Fantoni; perturbative and non-perturbative renormalization in lattice field theory, M. Testa; highlights of hadron collider physics at fermilab, T. Muller; introduction to string compactifications, K.S. Narain; introduction to sigma models in string theory, S. Randjbar-Daemi; introduction to string compactifications, E. Gava; black hole physics in general relativity, G. Ellis; the moduli space of N=(2,2) superconformal field theories, P. Aspinwall; recent developments in black hole physics, S. Giddings; is quantum field theory equivalent to conformal field theory?, P. van Nieuwenhuizen. (Part Contents).