Hi. Your best bet would be to find a teacher in your area. There are many classes you can take. Some are expensive and some aren't so ask around. A good way to find a teacher is to go to a reiki healing circle in your area and ask there.
The thing with reiki is that it's not really a pagan technique. It is a spiritual practice that can be done by people of many religions.
If you have specific answers you're looking for then asking around on here might help.
thanks i cheked it out blessings moonshadow