So why are some aspects of Santería kept secret? Santeros would reply: if there's no reason for others to know, why tell them? Tradition says these things are to be kept secret, so they’re kept secret. It's that simple. Maintaining secrecy is a way of honoring tradition and the sacred teachings of our ancestors. When and if a person needs to know something, the Orichás will lead him into the religion through the proper channels.
By the way, none of the information I'm writing about on this website is secret. The information I'm sharing is general enough that anyone can have access to it. Imagine it as the tip of the iceberg, the part that's visible. There's more under the surface, but not everyone can see it.