Hi Claireandsi,
The new wiki project at familysearch seems to be a good place to start:
Topic: New resource from Familysearch
http://www.rootschat.com/forum/index.php/topic,259450.0.htmlOn the site index page, click on "browse by Country" (on the right-hand side of the page)
and then "P", and "Portugal".
there are pages there about
# Church Records
# Census
# Civil Registration
# Emigration and Immigration
# Social Life and Customs
and links to research tools:
# Portugal Genealogy links on genealogylinks.net
# Portuguese Genealogy - Tracing Your Family Tree & History in Portugal - about.com
# Cyndi's List - Portugal
# Genealogy : Portugal : Selected Internet Resources (Portals to the World, Library of Congress)
# Directory of Parish Records
# Directory of Royal Genealogical Data
# Letter-writing Guide
# Word List
That should give you all a head start

regards,
Bob