The seed should not be any larger than an inch deep in the soil. Compost, try going to your local Lowes or Home Depot and buying regular potting soil. I make a mix of mine, I use regular potting soil and add some moss and soiless mix and of course perlite. I sprinkle the slightest bit of bloodmeal in a 3QT container too, be VERY careful with this (first time I did it, I messed up terribly! Only use a pinch, act as if your putting salt on your food). About the seeds...You can do what potsmoker101 says about breaking up the seed, but I myself wouldnt reccomend it(im just precautious).