I agree Lynn - I love seeing the excitement and enthusiasm!
Linda;
The seed of Sedum is dust! I sprinkle it by the pinch into a shallow groove pressed into the surface of the flat of mix, so you can see which are seedlings when they eventually germinate. Water from below or with a fine mist at first to prevent them from getting washed out.
You can grow many succulents from a leaf - it's a bit slow but if that's all you can get, then go for it. Many Sedum can be propagated this way, as well as Echeveria and most other rosette forming succulents. Many times a leaf falls off onto the surface of the soil and roots all by itself as they are sometimes very loosely attached. As for Semps, I haven't tried this so can't speak to the success you can expect.
I need more tender succulent plants sooner, so I usually behead the mother plant, then it grows lots of smaller rosettes to take its place, which in turn can be cut off for propagation (or crafts).
I use very dry Sunshine mix #4 for most of mine, only watering after about a week to give them a chance to callous. I suggest a copious amount of experimentation to see what methods you prefer - and above all - have fun!
