I just had a realization about feeling the energy not to long ago. You can control your feelings and how you want to feel about something. Your hands have a direct connection to your energy centers and so you really don't need to focus on the energy coming from them.

Although you could use a accupuncture book as a reference for a basic guide to how energy moves through the body.

As far as feeling the energy, you can attach whatever feeling you like to collecting and discharging the energy. You can do this by attaching feelings that you already have or asking others what are their positive feelings, read a book,etc and mentally attach those positive healing feelings to the the energy. Some people start with a sexual feeling and build from there to a feeling of complete bliss when the energy is moving.

You just attach the feeling to the energy.

I originally learned sword fingers as a self defense art. To cut your opponents energy and it is very powerful. It depends on how you focus your mind when using it. Using it as a Healer is much more powerful than as a self defense move, if for no other reason than to be able to heal yourself after being cut to ribbons by someone else.

Jeff