The practice of Vajrabhairava is a practice of Anuttara Yogatantra. You must have an initiation and teachings by a qualified teacher. Please ask a center of Tibetan Buddhism for information. The word "Yoga" means exercise and the word "tantra" continuum. The exercise is to meditate and to understand the teachings. The sadhana practice should be done daily. The text is a symbolic text. You must have explanations. So you need teachings. Tantra is a practice exclusively for the advanced.
