I'm not an immigration expert so I can't speak to how your experience would qualify, but in general I think internet businesses here are very much like those in the United States and Europe.
Our sites are built with HTML, CSS, Javascript, etc. Content Management systems like Wordpress, Squarespace, Drupal, and Joomla are becoming more and more popular with business owners. In general, our web developers tend to use open source technologies over proprietary systems.
It all depends what you want to do. If you can provide a bit more information, I'll try to give a better answer.
Scott