I recommend the website
http://www.ivo.se/guinness/index.html
This has lots of interesting information on Ireland's second best export. Especially recommended for those "amateur" Guiness drinkers is
A Guide For The Un-Initated To Buying Guinness In An Irish Pub at
http://www.ivo.se/guinness/beginner.html
Oh yes, and Guinness
IS good for you. Doctors, hospitals and blood clinics still dispense it in Ireland.
Mr Mephisto