The process of become a Reiki Master involves going through 4 different Reiki Levels. To move up a level requires you to be Reiki Attuned to the next Reiki Level.
Having done both in-person Reiki level attunements and much study about energy medicine, I can assure you that books are equally as powerful. In fact, Dr Usui who discovered Reiki Energy taught his students through books. The trick to making sure that you are getting as much out of the books is to really take the reading slow and with a meditative approach as opposed to the way you would read a novel or the newspaper.
A Reiki Self Attunement Class may be better than an in-person Reiki Attunement for a number of reasons:
1. Books allows a truly wonderful Master Reiki instructor to attune you when the Reiki instructor may otherwise be booked for months or be in a distant location: Books can get you a better attunement than just the “local" Reiki class.
2. You can attune yourself and get used to your own power from the get go: The most important part of Reiki attunement is firm belief and practice. I firmly believe that attuning yourself can help you to build both the belief in yourself and the perseverance to practice and develop your Reiki power.
3. You can go back over the course whenever you feel it necessary: Refresher anyone?
4. You get to join an online community of others who are learning Reiki right alongside you: A community of people is a resource that truly cannot be matched. You will stick with the practice longer if you have a group of people supporting you and that you support.
So be comfortable and have faith that Reiki Self Attunement is just as powerful and able to increase your Reiki power as any and all other methods.
Bradley Spencer helps people to find a Reiki Self Attunement course that is right for them.
Please see this review of Reiki Classes to see if one fits your needs.