Start with the Catholic Information Center http://catholic.net/

http://ic.net/~erasmus/erasmus.htm

Caribbean/Liberation theology http://pw1.netcom.com/~hhenke/index.htm

Catholic Information Network http://www.cin.org/

Links to Catholic sites http://www.catholic-forum.com/churches/stbrides/links.html

Liturgical http://www.christusrex.org/www1/mcitl/litlib.html

Marianland (you could call it Fundamentalist Catholicism) http://www.marianland.com/

Roman Catholic links http://www.ewtn.com/links/links.htm http://www.newadvent.org/

Vatican's homepage (pictures can be downloaded) http://www.christusrex.org/

Vatican documents, encyclicals etc. http://users.sgi.net/~elcore/catholic.htm