Desi,
I think your question was already answered on this thread. The best thing for you to do is look at all of the rules for cash games (Robert's Rules of Poker) and compare them with the TDA Rules and decide what is different. Basic rules of etiquette are the same. Acting in turn, verbal declarations, check-raise, and the single oversized chip rule are just a few that are the same in tournaments and cash games. There are other rules that pertain to tournaments only. For example; assigned seating, dealing players in that are absent from the table, blinding-off absent players, no re-entry after an all-in loss (unless re-buys are allowed), and you can't cash-out when you're winning 10,000.
I'm sure there are other differences that we can come up with but, any poker player should be able to adjust to, and understand the differences between cash and tournaments. It's poker!