2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/12965In this introductory talk I give an elementary overview of the development, current status, and near term outlook for three probes of large scale structure; galaxy clustering, bulk flows and weak lensing observations.Introductory talk presented at the 14th IAP conference: Wide Field Surveys and Cosmology. 10 pages, 2 figuresAstrophysicstext