An interesting article on assisted suicide published on the BBC's website is: Assisted suicide: Debate around the world.
For more information on this subject, see:
The Good Euthanasia Guide by Derek Humphry. not a 'how-to' manual but one that points people towards the countries and organizations that will assist a death (from www.finalexit.org).
"How-to" Euthanasia Books, Annotated Bibliography By Derek Humphry (from www.finalexit.org)
The Peaceful Pill eHandbook by Dr Philip Nitschke with Dr Fiona Stewart
The Euthanasia Debate website, which has links to various other euthanasia websites including up to date information on US state specific euthanasia law