The Tibetan Book of the Dead – original translation – online and free access. A gem. This text and the instructions about doing the readings of it are the basis of the Labyrinth Readers Society.
We have just updated things a bit.
‘Alas! when the Uncertain Experiencing of Reality is dawning upon me here,
With every thought of fear or terror or awe for all [apparitional appearances] set aside,
May I recognize whatever [visions] appear, as the reflections of mine own consciousness;
May I know them to be of the nature of apparitions in the Bardo:
When at this all-important moment [of opportunity] of achieving a great end, May I not fear the bands of Peaceful and Wrathful [Deities], mine own thought-forms.’
Repeat thou these [verses] clearly, and remembering their significance as thou repeatest them, go forwards, [O nobly-born]. Thereby, whatever visions of awe or terror appear, recognition is certain; and forget not this vital secret art lying therein.
O nobly-born, when thy body and mind were separating, thou must have experienced a glimpse of the Pure Truth, subtle, sparkling, bright, dazzling, glorious, and radiantly awesome, in appearance like a mirage moving across a landscape in spring-time in one continuous stream of vibrations. Be not daunted thereby, nor terrified, nor awed. That is the radiance of thine own true nature.
Recognize it.
From the midst of that radiance, the natural sound of Reality, reverberating like a thousand thunders simultaneously sounding, will come. That is the natural sound of thine own real self. Be not daunted thereby, nor terrified, nor awed.
The body which thou hast now is called the thought-body of propensities. Since thou hast not a material body of flesh and blood, whatever may come — sounds, lights, or rays — are, all three, unable to harm thee: thou art incapable of dying. It is quite sufficient for thee to know that these apparitions are thine own thought-forms.
Recognize this to be the Bardo.
http://www.holybooks.com/wp-content/uploads/The-Tibetan-Book-of-the-Dead.pdf