Zazen basics

For zazen, a quiet room is appropriate. 
Drink and eat in moderation. 
Let go of all involvements and let myriad things rest.
 Do not think good or bad.
 Do not judge right or wrong.
 Stop conscious endeavor and analytic introspection.
 Do not try to become a buddha. 
 How could being a buddha be limited to sitting or not sitting? - Dogen Kigen 1227