Let's start at the very beginning . . .

The first question to answer, I suppose, is what is reiki?  I offer you the definition from my website Healing Hands of Reiki:

     Reiki (pronounced Ray-key) is an ancient hands on healing modality re-discovered by Mikao Usui, that accesses Universal life force energy. It can be used for stress reduction, relaxation and to promote healing and balance.  The word Reiki comes from the Japanese word Rei, which means universal, higher spiritual consciousness, and Ki, which means life force energy. Reiki is spiritually guided life force energy.  Anyone can benefit from Reiki. Anyone can learn Reiki.  Reiki never causes harm and can be used in any situation. It works on all levels–physical, emotional and spiritual.

The ability to channel Reiki energy cannot be learned by studying it. This ability is transferred to the student by the Reiki Master during an attunement process. 
 
What Reiki can do for you

Reiki . . .

• reduces stress
• promotes relaxation
• increases energy
• encourages restful sleep
• relieves aches and pains
• stimulates the immune system
• supports the healing of serious illness

What Reiki is not

• instant healing
• an excuse not to visit the doctor (Reiki works in conjunction with medical or psychological treatment)
• new (or new age) forms of energy work have existed since recorded time. Such practices have been re-discovered but they are not new.

Learning reiki is not essential to energy work.  There are many modalities of healing, working with energy and other means of expanding one's creativity.  However I've found reiki invaluable in my life.  To learn more about reiki go here.