Buy the following book: RHCE Linux Study Guide by Michael Jang. Install Red Hat (or CentOS/Fedora, tips about this are in the book) and start working through the book.
There are no exam dumps, this is a hands on exam, no (multiple choice) questions. You are required to fix/set up a Red Hat box within a certain amount of time.
If you think you are ready for the exam you can (hopefully also in your region) do a test exam (ask Red Hat for details, not free).
Hope this clears things up a bit.