Free Informatica Powercenter Training Materials?

I recently had Informatica Powercenter 8 installed on my work computer, but we do not have any local resources for training, and my company will not pay for any. So, I am wondering what free resources ( Web pages, PDF’s, etc ) are available to help me get up to speed on this program.

Currently, I have access to the development side of my company’s installation of Powercenter, so I can use step by step examples, also.