Growing MJ requires that you educate yourself. So read the sticky posts, they anticipate beginners' questions and have the answers. Check the Beginners section as well. When you are done, read them again.
Put it in Soil, Water Every 2 days. leave light on 18/6, or 24/0 if you dont want to bother turning it off. When it reaches a desired height. Anywhere from 6inch-1foot+, Put it on 12/12 light cycle, This will initiate the flowering cycle. Harvesting time will vary on strain, around 7-9 weeks.(Dont expect big buds, So when you harvest it wont be much dissapointment. But seriously google will take you to many Cannabis sites. It should help you alot.