Live tells are acctually a very powerful edge to have especially at low levels like 1/2 and 2/5
Most people even regulars give off tells, only people who have acctually dedicated time to purposely not give off tells do so
A good one is when someone glances at their chip stack real quick when community cards are revealed, usually means they hit a cards or cards they like
Another is when someone just stares at the community cards, usually means they have nothing, but they are looking trying to find a way to suck out
When someone has a big stacks of chips and uses all of his small chips to make a bet it's usually a
bluff, almost always
Like someone mentioned already, if you see someone that has been sitting back in there seat relaxing then all of a sudden is sitting upright beware, this player has just been dealt a monster or has hit the flop hard and is sitting up getting ready for battle
I could go on and on having been playing live poker for a long time
You must remember though that these tells don't always mean what you think they are supposed to mean, so I wouldn't make desisions based solely on these tells, but rather use them as 1 of many pieces to solve the puzzle