Help on studying campaings - help on research?

Hello folks, I am responsible in my company to do some research on companies or on some market segments. I am supposed to research all concept, media and campaigns for instance of Intel. Or sometimes I need to research concepts, campaigns, media for a bank segment.

Can you give me tips on where and how to do this over the internet and also off-line media?

Nowadays I read fastcompany, contagious mostly, and of course reads magazines and that segments and try to guess concept just reading advertising. But I am sure there are better places and ways to do this.

Any help is really appreciated.

Thanks, MB