I can feel a persons thoughts, aura and chakras without trying at times. But
barely with my crystals, I can only feel a few in my hands. Others I feel in the energy center they affect more. when I started about a year ago I couldn't feel much of anything all. But what I did notice more is the affect they play on my life and how much they help.

And as far as using mine or programming I just love all of mine. Most of the time I use affirmations and speak what I would like help with. Otherwise I just take them in my hand and heat them up and hold them and appreciate them. Usually does the trick. Along with moon bathing and rice naps.