Here is how I have my cameras setup to give an idea of how to use the different images that are produced.
A: The small view of each camera uses the CurrentImage.jpg file used in each of the specific camera folders. Clicking on the image runs the Master Image action setting the master image to the specific camera.
B: This refreshes the Master1.jpg image contained in the base folder. This is actually a symbolic link that points to the currently selected Master Image (changed through the Master Image action referenced above).
C: This shows the recording 1 state (the date and time of the most recent recording). It is also a link that switches to the detail camera page.
A: Thumbnail00[1-9].jpg from the camera's image folder. This represents the last 9 recordings. Clicking on any one of the recording changes the Master2.jpg, the show 20 seconds (20 frames) of the most recent recording.
B: This is a refreshing version of Master2.jpg from he base camera folder. This is a symbolic link to either the MasterImage (if that was the last item selected) or the 20 frames of the last selected recording.
On my iPhone sized screen I use the CarouselImage.jpg found in the base directory. This cycles through all of my cameras, switching cameras every 4 seconds. Clicking on the image runs the Pause Carousel action that stops the switching.
I also have a trigger setup that when the cameras detect motion it runs the Mosaic action (2x3 of the last 6 images) that I then text to myself.