Useful links for Oracle Apps Support

For all information about Oracle Application Courses
http://education.oracle.com/

For information about Oracle Application Products
http://www.oracle.com/us/products/applications/index.html

To Download Oracle products (ensure licenses) http://www.oracle.com/technetwork/indexes/downloads/index.html

To log a Service Request, to download patches, to access the knowledge repository (related to issues), to check the compatibility of the products, operating system version etc.
http://support.oracle.com/

Useful blogs

For Oracle Apps Developers
http://oracle.anilpassi.com/

For Oracle Apps Tech

http://blogs.oracle.com/stevenchan

http://oracleappsblog.com/

http://appstechnical.blogspot.com/

http://oracleappstechnology.blogspot.com/

For Oracle Apps Functional

http://www.oracleappshub.com/