Lama Zopa Rinpoche explained the visualization when doing tonglen (taking and giving) meditation in this excerpt from the 26th Kopan Course.

Lama Zopa Rinpoche discusses the death process and explains the signs which indicate that the consciousness has left the body. Rinpoche draws on his own experiences of seeing the deceased and gives a detailed account of Lama Yeshe's passing and cremation.

A public lecture on the death process, the intermediate state and rebirth, given by Lama Yeshe in Sweden on September 8, 1983.

Lama Zopa Rinpoche explains how to analyze reincarnation

An explanation of beginningless mind, reincarnation and the causes and effects of karma

An obituary by Nicholas Ribush and a brief remembrance written by Lama Zopa Rinpoche.

Published as the foreword to "Death, Intermediate State and Rebirth" by Lati Rinpoche and Jeffrey Hopkins