Well, I don't use rockwool. I germinate mine either soil or in a jar. If you're doing soil, then put some seeds in a small pot. Water and keep moist. Put in a warm place to sprout. Once they sprout very carefully lift them to individual pots or trays. Just are there are many different growers, there are methods of growing. If you decide to go soiless to sprout them dampen a papertowel. Put seeds in a tupperware container, cover container and leave in a warm spot for several days. After germinating, let the root get 1 1/2 to 2" long. Plant in hydro sytem rockwool or hydroton. Make sure the seedling does not dry out or they will die. Rockwool has it's own ph and holds alot of water. Read messages on how to deal with rockwool. It this your first time growing?