Cosmology today-A brief review
  This is a brief review of the standard model of cosmology. We first introduce the FRW models and their flat solutions for energy fluids playing an important role in the dynamics at different epochs. We then introduce different cosmological lengths and some of their applications. The later part is dedicated to the physical processes and concepts necessary to understand the early and very early Universe and observations of it. 
Jorge L. Cervantes-Cota and George Smoot
astro-ph.CO gr-qc hep-th