Look at Rick's post of Jan. 21st, 2013 in the thread titled 'What Did You Do Today' for pictures of raw sphagnum moss, before and after processing. You can usually find the unprocessed wherever Orchids are sold. Milled or processed raw sphagnum is a little harder to find. You may have to go to a nursery or well stocked garden center for that. Or you can grind your own in a blender or food processor, which is what I do. The second choice, milled sphagnum peat moss is already processed, darker in color, and is much easier to find.
Here is Rick's picture showing unprocessed and processed raw sphagnum and two of mine showing a two to one mix (moss to sand) using eack type of processed moss.
The chipboard seen in the picture is what I use for top and bottom support as I turn (flip) the bag over when loading and covering scales. Used also to transport the bags when necessary.