In my experience, at live NLH, bet sizing isn't important except for pot control. No one, I mean no one, will get any reads off your bet size.
Aggression is the key. Yes, it is frustrating when you have a strong hand and get no action. But you get action often enough with your strong hands. Playing passively is not the answer; simply take the lead whenever you flop a hand with some value. After you show down a few weak hands that you pushed, they will start calling your value bets, hoping to catch you in one of your "lies." And they are generally very polite about letting you know when they flopped top pair or better.
And one of the most important principals for live NLH: Don't play easily dominated hands, suited connectors, and small pairs OOP. Just don't; muck it. You won't get value from it, and they're not smart enough to exploit it. Play a wide range with position and a very narrow range in EP. There are many more multiway pots (people aren't multitabling, so they're less selective when entering), so focus on position. And aggression at all times.
Tells are somewhat important, but mostly against the donkeys. Generally, relaxed = good hand, tense = bluff (or weak). Better players will mix up their tells, so just try to play that side of the game to a stalemate with them.
P.S. The question of the river bluff rarely comes up; you could safely ignore it. There are some players who river bluff, but if you assume that no one ever does, you won't be far off. Overplaying, yes; triple-barreling, not so much. The most common form for river bluff is call, call, call, raise all in, with position. If it doesn't fit that form, it's probably something else.
Aggression is the key. Yes, it is frustrating when you have a strong hand and get no action. But you get action often enough with your strong hands. Playing passively is not the answer; simply take the lead whenever you flop a hand with some value. After you show down a few weak hands that you pushed, they will start calling your value bets, hoping to catch you in one of your "lies." And they are generally very polite about letting you know when they flopped top pair or better.
And one of the most important principals for live NLH: Don't play easily dominated hands, suited connectors, and small pairs OOP. Just don't; muck it. You won't get value from it, and they're not smart enough to exploit it. Play a wide range with position and a very narrow range in EP. There are many more multiway pots (people aren't multitabling, so they're less selective when entering), so focus on position. And aggression at all times.
Tells are somewhat important, but mostly against the donkeys. Generally, relaxed = good hand, tense = bluff (or weak). Better players will mix up their tells, so just try to play that side of the game to a stalemate with them.
P.S. The question of the river bluff rarely comes up; you could safely ignore it. There are some players who river bluff, but if you assume that no one ever does, you won't be far off. Overplaying, yes; triple-barreling, not so much. The most common form for river bluff is call, call, call, raise all in, with position. If it doesn't fit that form, it's probably something else.