Google, Yahoo and Bing Site Verification

Does anyone have a straightforward set of instructions for finding my Google site verification code (my site was verified, I just didn't save code - doh!). I also would love a straightforward walkthrough for the process on Bing and Yahoo.

The instructions from searching for these topics are very complex, deep and confusing. Any recommendations for easily decoding this, getting the keys and moving on?

Cheers!
Isis