David Firth is one of the best cartoonists of all time! I will admit that I personally don't think this is his best work. I still love it! This series tells the story of Salad Fingers, a really weird guy living in an empty wasteland. There is implied to be a war of some kind. Maybe what we're seeing is the aftermath of a nuclear apocalypse.
There's never an exact explanation as to exactly what is going on. Maybe the name implies that the character himself is made of lettuce? I mean, he's certainly green! It can get dark and surreal, but you should be used to it given the nature of Firth's cartoons. The animation and creativity often gets better every episode. With few characters, it still knows how to set up a good story. ***1/2