It's a process:
-Pay attention at the table.
-Keep notes on players.
-When they bet, raise, call, etc ... put them on a range of hands based on your prior "read" of the player.
-From that range of hands, deduce a smaller sample size based on how they are betting during the hand in question.
-Don't be a donkey by putting too much stock in "how long" people take to act. It's not as big of a tell as you might think.
You're welcome.
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