Last year I visited the Dublin Buddhist Centre and gave a talk called Padmasambhava Practice – a Personal Unfolding. As the title suggests, it was quite a personal take on the experience of practising visualization and mantra recitation – in this case focusing on Padmasambhava, the great teacher who was instrumental in establishing Buddhism in Tibet, and who is a kind of archetypal guru figure.
The talk was recorded, and is available to stream or download from free buddhist audio.