http://addyosmani.com/blog/ has a lot of good info on working with javascript. The recommended reading in the side bar, particularly javascript garden and principals of idiomatic javascirpt have useful notes about the language and testing suites. I really like Sublime Text 2, there are some great packages for web development and javascript specifically available for it. Plus SFTP and GIT plugins. The Yahoo theater stuff, and crockford's lectures are good. But I would start with Addy Osmani's site and the stuff he recommends.
