Om Mani Padme Hum Mantra as Explained By H. H. the Dalai Lama http://www.tibet.com/Buddhism/om-mantra.html His Holiness The Dalai Lama explains the meaning and significance of this important Buddhist mantra
Recitation Preliminary To Teaching
http://www.scdharma.org/portal/resources/prelim.htm A prayer recited prior to Buddhist teachings that is taken from the Vinaya Sutra.
This version presents the prayer in both Romanized Tibetan and an English translation by David Molk.
The Prostration Prayer
http://www.scdharma.org/portal/resources/prostrationprayer.htm This prayer is the verbal expression of Buddhist prostration performed before meditation, receiving or giving teachings, and all other formal practices. It also describes the meaning of each element of the physical act of prostration.