I have a little point and shoot camera, but I am able to take different exposure shots.

I have never done HDR before, but really want to try some.

How exactly is this done?

I am familiar with photoshop, but my old computer crashed and I am stuck using paint.NET. It has layers and everything, so I should be good to go.

How do I adjust the layers and what settings do I use, such as: "overlay"

Any tips would be appreciated.
Sorry if I posted in the wrong section.
Im a newbie