Place the bacon in a sauté pan over medium-low heat and cook for 5 minutes to render as much fat as possible.
While the bacon is cooking, remove the stems from the collard greens, and thinly slice the leaves across.
Add the garlic to the pan and cook for 1 minute. Add the greens and salt, stir well to coat the greens with the bacon fat, reduce heat to low, and cook for 5 minutes, until wilted, stirring occasionally. If you like them softer, cook for 10 minutes.