i am certianly no reiki expert, i have taken no classes and know mostly what i have seen in books, mostly paging through them at the bookstore.
after a recent Liver Flush my liver was in pain, then it was getting scary painful. nothing helped. i strated to kind of freak out, what was i going ot do? 4 days after the flush it was worse than ever. in desparatin i positioned my hands like i had seen in the reiki books and sent pure love energy into my liver. i did this for about 5 - 10 minutes. my liver calmed down almost immediately!!!
then about 2 hours later it started hurting again, and i did the same thing. again it calmed down, this time for good!!
i would love to take reiki lessons from a qualified teacher, but this experience shows that no experience or much knowledge is required, just intention.