re: Poker & How to handle TPTK
You must base your decisions on many factors. Table dynamics, villain tendencies, stack sizes, etc. That being said...
Generally people don't bluff that often. It is more frequent in MTTs however. So you ask yourself "is it possible villain is raising me here with less than what I hold?".
There is no right answer for your questions. Only good players will know what to do most times. Hopefully, you pay close attention to your opponents' behavior. This can help you to make the right decision when the time comes.
Sometimes people do things like this when they miss draws, or if they think they can run you over. Consider your perceived image as well when considering calling with TPTK.
Hope this helps. I wanted to contribute to the thread.