Oracle Docs

http://www.oracle.com/technology/index.html

Tutorials

http://www.club-oracle.com/
http://w2.syronex.com/jmr/edu/db/
http://www.db.cs.ucdavis.edu/teaching/sqltutorial/
http://www.orafaq.com/
http://www-db.stanford.edu/~ullman/fcdb/oracle.html

News Groups

http://groups.google.com/group/comp.....oracle.server
http://groups.google.com/group/comp....es.oracle.misc

If you have more resources to be added PM Me