Writings on certain subjects posted on varying websites and blogs can't always be relied upon, as it is often inaccurate and/or thin. When researching any subject in earnest, I refer to the City Library, as published works/literature more often than not have facts and details verified before they are published...not all but most. I am sure that there would be a wealth of literature on spiritual matters available from your City library...I believe that most Large Libraries now have an on line catalogue that you can peruse. If nothing else the Library is a nice place to visit and meet with like minded people.