In the slides, slide 127, he says don’t worry so much about style guides/code standards, reformat all code checked in to VCS.
Keep in mind that some of the guidelines might be a bit outdated.
You can find some simple but essential coding conventions at the Google Code Wiki.
For very detailed style guides read the Dojo Style Guide. It is going over naming conventions, file conventions, variable usage, code layout, whitespace, and comments.
A bit puzzled that I cannot find on the replies
I personally prefer jQuery standard, though it doesn’t much differ from Idiomatic.js. But whatever standard you choose you will need a validator to check how successful you are following it. I couldn’t find any for jQuery or at least Idiomatic, but eventually came up with JS_CodeSniffer