Before we start, notice that in the example image above there is detail in the shadow areas while the brightest areas have been
blown out to white, having no detail showing. This is what happens when the dynamic range of a scene exceeds the dynamic range
of your camera. However, when I looked at the scene, the house number below the light was clearly visible as well as the shadow detail.
This is because my eyes and brain have sufficient dynamic range for all of those tones to be visible. What we want is an image with the
same tonal range and I got that for this scene with a three-shot bracket that had exposures varied by +1, 0, -1 stops.

Okay. That said, let's get started. First, make sure the 'Layers' and 'Channels' palettes are open (Items 1 and 2 in red above).

Then, assuming a three-shot bracket such as the one I'm using here, load the images into a stack of layers as shown in the palette
above, with the darkest image in the top layer and brightest image in the bottom layer.

This stack is quite simple to create in Photoshop by using the Edit > Scripts > Load Files into Stack... command. If the command didn't
place the layers in the desired order (darkest on top to brightest on the bottom), simply drag the layers within the palette to get that order.

In the above example, the visibility of the first and second layers has been disabled (controlled by clicking on the little box to the left
of the layer thumbnail).

Click 'next' in the top right corner of this page to move to the next step.