As an active member of the Irrlicht renderer community, I recently posted an article on how to set this robust, graphical framework up inside of the Eclipse Integrated Development Environment.
You can view my post on the official forums here.
After reading, since you will now have a basic understanding of how to get your development sandbox ready, you can start fiddling with the rendering engine via these tutorials. These are the same lessons that I used to ramp up on my knowledge of Irrlicht.
Let me know if you have any questions!