The amount that you can bluff and the tactics that you can use to deceive and manipulate your opponents will vary depending on where, what, and how you're playing poker. Your opportunity to bet in limit games will have much more slender effects than your bets in no limit games. Furthermore, if you're at a casino, your physical appearance and persona will play a major factor, and hiding tells is very important. In online play, these factors aren't visible, and you will lose the chance to read your opponent's tells. Still, you can bluff atCaesars Online just as well as you can at Caesars, Las Vegas, if you know what you're doing.
Bluffing is risky business, since by its nature it means that you do not have a winning hand. If your opponents can tell this and call you down, you will lose. If even one of your opponents has a winning hand, they will call you down. In any case, you will lose, and generally, you'll lose substantially.
Keep track of your opponents and what they are playing. Pay particular attention to when your opponents seem willing to fold. Once you have a basic read on people, you can take opportunities to bluff for a pot. You should never bluff when you have more than two or three other players in the pot with you, and when you bluff, you should always choose to represent a card or hand. By representing (or acting as though you had a specific card or hand), you will be able to have a more consistent and believable display. Beware of the risk of the other player actually having that very hand. This is why it's so important to do this only when there are a few players, since this diminishes the likelihood of other players having a made hand.