Download it from the beta playtest page.
I tested printing it using the booklet feature of Adobe Reader and it was very readable. It will take about 42 sheets of paper printed front and back.
Joesph Goodman is also continuing the lessons of the Dungeon Alphabet. The illustrations in the playtest document are kick butt.
It is however not the full game, as far as all the spell and monsters, Goodman Games is upfront about that in the introduction. You should be able to run a short campaign from Level 0 to Level 3. The good news is that all the mechanics come into play from the start. So by playing you will get to experience what makes the DCC RPG unique.