None of the books are available and are out of stock. More over they look so expensive.. Do you guys know any other once which you think are available.
For certification material please visit the page: http://www.teradata.com/tcpp/Authorized-Study-Guides/
You can also use the official Teradata product documentation material (PDF formats freely available to everyone) at the link: http://www.info.teradata.com/ E.g. If you are going for the Basics exam you can take a look at the Introduction to Teradata material found online.
The official documentation is also found with the Teradata Express package which allows anybody to test and learn the Teradata System in an SMP PC testing-environment.