Let's be clear, this is the beginner forum so understand I know little on the subject but would like to learn.

First, what is the best resource to get started.

Second, the little I have seen on Youtube videos, etc... has me stuck that there is a gaping hole in the thought process. Now, I know that isn't the case so correct me where I am wrong, please.

Let's say in a 1/3 live game I have KK and raise to $16 and get one caller. Based on the fact I didn't get re-raised I can likely rule out QQ, KK and AA and from what I have gathered on previous hands the range of this player is pairs and broadway cards, I likely would have got re-raised with AK from this player as well so I'm not including that.

I have him on pairs and broadway cards.

Flop Q 10 6

What good did me putting him on a range of hands do me when in that range is QT , TT and 66. All I can rule out at this point is QT for two pair and QQ for a set.

Once the flop hits the board I know what hands beat me and, in all honesty, they are likely in EVERYONE's range.

What is the point?

The idea of a range is that you don't try to put your opponent on a specific hand. You figure out the range of hands that he would play that way and figure out which action is best by figuring out your expected value against all of those hands and determining a weighted average based on the number of possible combinations of those hands that your opponent can have.

Let's say you have just enough left to go all-in. Your opponent's range of hands that will call your bet is composed of 60% hands that you beat and 40% hands that beat you. Betting is profitable because you win more often than not. (Checking may be more profitable if it induces your opponent to bluff, but we're going with a simple case to illustrate the concept of range.) Your opponent's range includes hands that beat you. If he happens to have one of those, that's poker. You are playing against his range, not his specific hand that he actually has.

I think I understand that. So in the above example I am out of position and lead out with my KK and villain calls.

Can I narrow his range to broadway cards and not TT or 66 as I would expect, on this board, to get raised by a set that did not want to see another broadway card on the turn?

With him just calling is it fair to narrow his range to broadway cards and just accept the loss if he has a set?

Different players play differently. Some players will raise a set on the flop there. Some players will slowplay and wait until the turn or the river to raise.