I'm in the process of publishing my product which is ready for beta testing. It has some level of complexity, therefore guidance is required. But I don't want to spend (yet) a couple of months writing detailed documentation.
So, to start with and based on your experiences, what option would be the best?
NOTE: This is to learn the usage of my product, not for marketing promotion.
I'm not sure what level of technical sophistication you were expecting, but guiders.js is a great open-source package that makes it easy to build step-by-step walk-throughs and tutorials into any web application.
http://blog.optimizely.com/introducing-guidersjs-an-open-source-guider-e It is fairly easy to setup -- but the main benefit is that it allows you to add documentation directly inside your application, rather than showing screenshots inside separate media like videos or PDFs. This makes it very intuitive and user friendly.