I talk about hand ranges throughout my mathematics videos. We often do things like give a guy a range in a given spot, figure out the number of combos, and do the math on the hand to draw a conclusion as to the best course of action.
Hope that helps
I found the best thing is to have PT and PAhud going, and look at his datamined hands.
Look at his vpip/pfr. If he is on the button, expand the number, if he is utg, tighten it.
Once you know a few ranges for different %, life gets easier.
eg .5% is AA, 2% is AA, KK, AKs, AKo.
10% is 77+, jts+, AJo, A9s
20% is 66+, a4s+, 10 9s+, A9o
30% is 55+, A5o+
Note these numbers are from pokerstove, and everyone seems to play small pairs more often than this!
Now, if our villain is say 20/15, and he raises from the button, he is prolly raising 30+% of hands, so 55+, A5+ would be a range, as well as suited connectors.
If the same villain is utg, he might be raising more like 10%so 77+, AJo+ etc
Also, if you have attempt to steal stats, you have a much better idea of how POSITIONALLY AWARE villain is. Some idiots play exactly the same hands regardless of position
THis is kinda quick and dirty, but I always tend to remember those few numbers, and it keeps me out of trouble. eg the other night, I had stalked a fish, and finally picked up qq. He was playing 70+% of hands, with a very low aggro. He raised UTG, i was about to repop, until I saw his pfr was 4%. Utg, I put him on AA, KK, AKs AK and QQ. So I called to set mine. Flop K 8 7. He bets, I fold. There is nothing on the flop that I beat, and a passive player potted it.
You also adjust to the maniac at the other end of the spectrum, particularly when maniac raises, and one or two players cold call, you can get in cheap with pps, SC. Best thing in this case is your RELATIVE position. When maniac bets, you can hopefully raise a couple of callers when you hit your hand!