Common courtesy of what to do at the table is basically just to keep a friendly game going –  if people are having a good time and enjoying themselves, the game will likely attract players to play again. Some common no-no’s at the poker table are listed below:
No excessive talking on the phone for extended periods of time
No constants smoke breaks if they slow the game down
No rabbit-hunting unless it’s specifically allowed & agreed among players
No being a jerk, especially to new players
No acting like a know-it-all
No advising people on how to play their hands