Preparing a “Getting Started Guide” for vCO I stumbled over a real pearl which cannot wait to be tested:
www.codecademy.com provides a free, self-paced online training for JavaScript starters. It teaches you the basics of JavaScript, like Variables, if-clauses and loops, in small lectures.

If you create an account (optional), the system remember your progress.
So, if you’re new to JavaScript, Codecademy is a quick way to get started!


Steve Jin: VMware VI and vSphere SDK
David Flanagan: JavaScript – The Definitive Guide
Marijn Haverbeke: Eloquent JavaScript
Cody Bunch: Automating vSphere: With VMware vCenter Orchestrator