- Align one end of the opening lever/appendage/knob/tab so that it meets underneath the lid.
- Push down on the other end of the lever. Et voila!
It took a while of figuring out to get the can open. I was surprised and disappointed to see there were no opening instructions. I initially thought that this tab needed to be removed.
You could also try prying it open it with a screwdriver.
See also: Lever.