As you're quickly finding out that there's many different views on how to grow weed. If you're new to sites like this, and you attempt to find "the right way" of growing, you'll get what I call "information overload". So many experts with contradictory advice can drive you crazy.
I'll add to the din:
1. Miracle Grow is fine soil. You indicated that you're using their organic brand...not a bad choice.
2. The hardest part of growing for the first time is your temptation to do too many things all at once. Keep it simple. Make it your goal to stay out of the way of the plant's growth. Less is better the first time around.
3. Every new grower waters their plants too much to the point they drown the sucker. Roots need air about as much as they need water. Saturate your soil and then hide the watering can for 4 days.
4. Every new grower introduces nutrients waaaaaaaaay too soon. Your soil has plenty to start with and you shouldn't even consider it until about a month into the grow. Don't feed your plant the recommend dose the first time...go with 1/2. After feeding the first time....wait another 2-3 weeks and give a full dose.
5. You'll read about topping, fimming, LST, defoliating, super-cropping, etc. etc. It's my suggestion you stay away from all this the first grow. Let the plant grow on its own all the way to the end just so you can get a feel of how it's supposed to grow. You can try all those other things once you get 1-2 grows under your belt.
6. CFL's are a good starter bulb. They work best in veg, and many have had nice grows flowering with this type of bulb. Many make the mistake of not allowing for the heat these generate and fry their plants. Make sure you have good ventilation and keep the plant from touching the bulbs as you'll burn 'em for sure.
Your job is to keep the plant alive this grow....not an easy task for many of us when we did our first. Patience will be a big thing to learn and may take years to acquire the right amount of this.