Badfoo

I don't understand wat you guys are talking about. FYI I don't have MS paint or any kind of new paint. I have the old regular paint.

I don't understand. I'm not able to just select the background. When i try i delete the picture as well. And when i delete something, I don't get a checkered background, I get a white background. That stays with the picture.

I've been looking around but I can't find anything that teaches me how to do this: How do i turn this: to this: