I often like to explain the Sefer Yetzirah in this manner. Suppose that at some point in the future almost everyone forgot the meaning of calculus, but that a few calculus books survived. At first glance you might think you understood them because, after all, they are written in English. However, a more careful examination would probably convince you that you understood very little of what is being said. Nevertheless, if you stared at the text long enough and turned it over a sufficient number of times in you mind, then patterns might begin to emerge and the text might begin to reveal its secrets to you. In this manner, what follows is basically a personal diary of my love affair and voyage of discovery with the text of the Sefer Yetzirah. Bear in mind, however, that I am essentially an amateur. My knowledge base is greater than some and far less than many others. In many instances, greater authorities may have a different interpretations, but also, in many cases, I may favor my interpretation over theirs! If we don't improve upon what has gone before, then we're just not making any progress. So, take what is contained therein, and enjoy. If you find something useful, so much the better!
As a final note of caution, however, let me remark that while Jewish mysticism and the Sefer Yetzirah make frequent mention of triads such as the Knower, the Known, and the Act of Knowing, these triplets should not be confused with the trinities that exist in other religions such as Christianity and Hinduism. To do so is to distort the meaning of a fundamental Jewish text. Let every religion worship in its own way, but let us not confuse the message of one with that of another.