The direct path.

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Kriya yoga is basically working with the energy centres and visulization, to move prana up and down the spine. As far as i am aware. It was something i was into a while ago with the kundalini type practices. I think it used to be called Laya Yoga but its normally called Kundalini Kriya yoga or something along those lines.

Could you answer a practical question?  I have been told that chi or prana moves up the spine or back of the body and comes down the front of the body.  Does it rise on the inhale and come down on the exhale, or is it the opposite?

Thanks for answering or directing me to a place where I can get very simple explanation.

You can do it both ways, but inhale-back and exhale-front is the typical.