D&D 5e Basic - downloadable from http://media.wizards.com/2014/downloads ... iendly.pdf.
D&D PHB - purchasable possibly at FLGS, definitely at B&N. Not essential but helpful.
Tweaks
- hit points / wounds
D&D 5e "hit points" seem to represent luck and defensive chops, not physical wellness. It's only when a character drops below zero hp that the player needs to start making "Death Saves."
More on this when I get round to it ...