A few years ago I lived next door to a Christian Science family, and had many conversations with the lady, who was more “into” the religion than her husband. She gave me a copy of Mary Baker Eddy’s book, Science and Health With Key to the Scriptures, which I read about half of. I went to church with them a couple of times, and went into a couple of CS reading rooms at various times.
My impression is that CS is a very intellectually heavy religion. Their idea of how physical and emotional healing takes place is that one meditates on God and, with the help of the Eddy teachings, come to a realization that disease is an illusion, and then poof, it goes away. Something like that. As I recall, much of M.B. Eddy’s main book is a guide unto that realization. A reading room probably is not much more than a quiet place to read and meditate, and perhaps to mingle with other like-minded people. I emphasize the mind part because I’ve also visited churches that call themselves Science of Mind, and they have very similar teachings, or at least they appear to me to have similar teachings.