Pretty simple, really. Let's see if I can do this from memory...

There's one die body. There's a removable carbide sizing ring that screws on to the bottom of the die. Remove the bullet seating stem and insert the decapping pin then run the stem back in to hold the decapping pin in place. Run your cases through the resizing/decapping stage. I don't recall off the top of my head how the mouth belling step works. For seating, remove the sizing ring and decapping pin. Replace the seating stem and adjust for seating depth. Prime your cases, dump your powder, seat your bullets. Screw the seating die out a bit and seat the die body a bit deeper to get the crimp you want. You CAN seat and crimp in one step, but I've always prefered to do so in two steps.

These make for a real handy, compact loading set up when combined with a Lee hand press. I loaded a LOT of 38 Spl on the Lee Speed die setup, both on a bench mounted press and the Lee hand press. I prefer a regular die set, but for travel? The speed die's right handy to have. Combine it with a powder dipper that runs the right charge of your chosen powder and a compact method of seating primers and you're good to go as long as you've got components.