How can you tell if Oracle products are certified or can get patches?

Do you know the differences between the terms Premier Support, Extended Support, Error Correction Support and Sustaining Support?  If you have Oracle products in your environment, you really should know so that you are aware of when you can get new patches from Oracle and Steven Chan tells us exactly how to understand these terms tonight by explaining how to find information on the MOS Certification page and deciphering it with the Lifetime Support Policies!