If you start with proven genetics you'll have a good chance of harvesting. It's a weed, and like other plants, you don't have to be a genius to master the art of growing. You will find yourself addicted to it after your first harvest.
Cannabis is a spiritual plant, and if you're a spiritual person, you can communicate your needs to your ladies. They will in turn formulate a special blend just for you. If you're greedy, and in it just for the money, I've seen good genetics, or plants pick up on those vibes, get offended and will not produce potent flowers. It's a crazy theory indeed, but all living things have a spirit.
When the spirit body separates from the physical body, you then have what us mortals refer to as death. If you have love in your heart for your fellow man, and produce positive vibes, you and your crop will be happy. Landraces are great for beginners, and pure indicas are easy to grow. Harvest hem early and they'll get you high. Harvest late and you'll get awesome medical benefits.
If you're intelligent, look for ways to help people that help those who are truly sick. Look outside the box. Like the gold rush of 1849, supplying the miners/growers is an opportunity in itself. I have some great ideas and plans on this subject. I'm from TN, but I'm sitting here in LA writing this as I visit family. If you're interested in acquiring wealth without losing your integrity, remember what the intention of the spirit of the law was when it was written. Too many people are perverting the law for money, and it's putting legal growers in the same class with cartels. Find a niche that's profitable, and benefits humanity. Patients in Mich are getting crapped on. That's a great place to find needy patients, and you can never fail if you have a desire to help those that are suffering.