Where to get started...DW

Hello All,

Could any one please refer me to site where I could learn about Data
Warehousing and reporting tools?

I am basically looking forward for a career change and have experience
working with Oracle Warehouse Builder. But am not familier with
poplulat tools such as Informatica, Microstrategy, Cognos, Hyperion
etc....

Are any of the above or similar applications available for free
download or have trial version to get familiarized with them. I had
been trying to find out some schools in Washington DC area who might
offer training on the these but haven't found any.

Thanks for your help!!
VS