Hi first time coaching only had 2 practices don't even know there names yet.Have 1 practice left before first game.I was thinking of just using 2-3 zone defense an on offense just told them to move the ball and space out.Any help?

Ball movement and spacing is the right idea for offense.

For defense, you can start with 2-3 zone. But I would not use that as a crutch... be sure to teach them man to man defense fundamentals.