No need to apologize; this is a place for asking questions. *g*

In the tools, look for the one shaped like a water drop. That's the Blur/Sharpen tool. Set it to blur, and click it on the bits of the image that you want to blur a little. Like the brush or pen tools, you can adjust the size of the "brush", the opacity, etc.

(Obviously, make sure you save the icon first, or make a duplicate layer and blur that, so that you can revert to the un-blurred version if you need to!)