The Informix on Campus
initiative now has its own domain: http://www.informixoncampus.org/
- the site has some great links to freely downloadable Informix training material. Examples include: Performance, Introduction to IDS, Extensibility, Data Studio, Object Oriented Approach and Databases, Application Environments, Introduction to Websphere Application Server Community Edition, Service Oriented Architecture and Web Services, RDBMS Enterprise Features, Virtualization and Cloud.
Another very useful thing about this website is that it is currently the best place to download the latest 11.50.UC5 IDS virtual appliance. (The xC5 VA is also available through Fix Central but not currently very easy to find - we're working on that...)