I do check my logs, and the most often requested hit from search engines is “ffxi campaign battle point system”.
I don’t have all the information, but here is a link that does have it:
http://wiki.bluegartrls.com/Campaign_Point_Calculation
This link should answer all questions about how points are gained in Campaign.
For the basics of a campaign battle, see
http://wiki.ffxiclopedia.org/wiki/Category:Campaign_Battles
Hope that helps. If there are more links that should be here, please post a comment and I’ll add them.
-pyra