2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/124602We present an introduction to the use of noncommutative geometry for gauge theories with emphasis on a construction of instantons for a class of four dimensional toric noncommutative manifolds. These instantons are solutions of self-duality equations and are critical points of an action functional. We explain the crucial role of twisted symmetries as well as methods from noncommutative index theorems.64 pages; v2: major changes, parts rewritten, references added. Based on lectures delivered by GL at the ``International Workshop on Noncommutative Geometry NCG2005'', Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran, September 2005High Energy Physics - TheoryQuantum Algebratext