For those that are interested it turns out that a shawl of with Amitabha and his mantra is usually placed on the deceased. Reciting his mantra "om ami dewa hri" (Tibetan pronunciation) is encouraged. There is a Gelug monastery in Richmond (the SF Bay region) that specializes in doing pujas for people for free, but of course a donation is always appreciated. They can be reached at gyutofoundation.org.
Evidently they do pujas for things other than the deceased also, like business startups, etc.
There is a tradition of making a distinction between two different perspectives on the nature of emptiness: one is when emptiness is presented within a philosophical analysis of the ultimate reality of things, in which case it ought to be understood in terms of a non-affirming negative phenomena. On the other hand, when it is discussed from the point of view of experience, it should be understood more in terms of an affirming negation.