Many people are interested in Kabbalistic books like the Sefer Yetzirah, but Rabbi Yaron Reuven says, what they don't realize is that all real Kabbalistic books are written in a way that can only be correctly understood by someone who learned the authentic tradition from a true Kabbalist. They have intentional mistakes and are written in a cryptic way that only their students can understand. Most copies available today, especially online are corrupted versions. On top of this, if a person learns Kabbalah without sanctifying themselves in matters of morality, they can be seriously injured or even die as a result.