2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/14906In these lectures we dwell upon the cosmological corner-stones of the Very Early Universe (VEU) theory: Parametric Amplification Effect (PAE) responsible for the generation of Primordial Cosmological Perturbations (PCPs), Chaotic and Stochastic Inflation, Principal Tests of VEU, and others.This is a brief review of the lectures given by the author in Australian ("Cosmology: The Physics of the Universe", eds. B.A.Robson et al., World Scientific, 213 (1996)) and Brasilian ("Cosmology and Gravitation, II", ed.M.Novello, Editions Frontieres, 288 (1996)) Cosmology SchoolsAstrophysicstext