2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2451In this series of lectures I review recent observational progress in constraining models of galaxy formation and evolution highlighting the importance advances in addressing questions of the assembly history and origin of the Hubble sequence in the context of modern pictures of structure formation.Lectures given at the XIth Canary Islands Winter School of Astrophysics ``Galaxies at High Redshift'' in November 1999 updated to reflect progress in the subject during 2000. Uses cupconf.sty (included); 30 pages, 19 figsAstrophysicstext