Reiki healing and Chakras

I have been searching for some one to teach me Reiki. I found a Reiki master, within my own family. I know there is a lot training invovled. I found three set book set which takes you from beginer to master and able to teach Reiki yourself. I am starting this training next month. I know what the chakras are and I know they come in handy when you are using it to balance someone's energy center (aka Chakras centers). I am wondering if there is some kind of grounding exersise that I can do to prep for the training.