Introductory Certificate in Marketing (level 3) – March 2008 To download slides from the March 2008 tutor training events please click below: What is Marketing This is member only content. Login to view it if you are a member, or click the link to find out how to become one. Understanding Customer Relationships This is member only content. Login to view it if you are a member, or click the link to find out how to become one.