The quality, depth, and multi-color nature of the Hubble Deep Field images makes them an excellent resource for studying galaxies at z > 2 using selection techniques based on the presence of the 912A Lyman break. I present a descriptive review of this method and of the properties of the objects which it identifies, and summarize spectroscopic progress on galaxies with 2 < z < 4 in the HDF. Using ground-based and HDF samples of Lyman break galaxies I discuss the luminosity function of galaxies at z ~ 3, and consider the effects of extinction on the star formation rates that are derived from the UV luminosity information. Infrared observations of the HDF provide data on the rest-frame optical properties of z ~ 3 galaxies, which are briefly described.
Categories: astro-ph