There are many kinds of poker: stud, limit, draw, etc. But Texas Holdem is very different from them in many ways. Here's one way how it is played differently from other poker types.
Texas Holdem has a lot to do with psychology. We should know how the opponent thinks and what is being thought by the same. Hand play is also important but not as important as how we play the opponent. A lot of times opponents with strong hands can be beaten even if we hold weak hands by merely using psychology.
Texas Holdem psychology is knowing what may be going on in the mind of the opponent and trying to undermine this by pretending hand strength, which oftentimes doesn't really exists. All we have is the ability to act and scare the enemy. This is especially effective if the enemy is not conversant with bluffing techniques.
With enough skills, we can bluff to win big pots by going all-in even with not-so-strong hands; even when the opponent has a stronger hand than we have. This is the beauty of Texas Holdem. At any time, during a game, we can decide to take the pot right there and then through an all-in wager.
What makes this really easy is the fact that in Texas Holdem, we only have to deal with the two cards of the opponent using our two cards. We don't have to fuss over many cards or hands to beat the enemy with. We just have to focus on two cards. Thus, it would be easy to guess what the enemy holds and to pretend what we want the enemy to think we hold.
Especially in no-limit Texas Holdem, it's really beating the enemy mentally. Wining is simply knowing what the enemy has and is up to by what facial and body gestures are seen in the same. If we are sharp enough to quickly notice these things in opponents once they see what they're holding, we can quickly devise a bluff strategy to impress on them the image of strength we want to project.
These face or body gestures are called poker tells. We watch how the eyes, mouth, hands, etc. of a person reacts when in front a hand. Each reaction often speaks volumes about a person's card pair and gives hints about how we should proceed.
Thus, Texas Holdem is often a game of sizing up the enemy hand and skills rather than technicalities and complex strategies.