2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55055In these proceedings for the First School on Field Theory and Gravitation (Vitória, Brasil), a brief introduction is given to superstring theory and its duality symmetries. This introduction is intended for beginning graduate students with no prior knowledge of string theory.14 pages harvmac texHigh Energy Physics - Theorytext