Hi,
9. Read and Search First - Read the crap out of this website. There is a lot of good info in the GrowFAQ. Make sure to look there before you post. Do a search before you post. I can't tell you how many people post the same questions over and over and over when they could have done a 20 second search for the answer. People are going to be less inclined to spend the effort to help you if you demonstate that kind of laziness. And use your head. Don't trust or rely solely on everything everyone tells you (especially me.) People mean well (like me), but they often are just telling you something that they've read and not experienced themselves (sometimes like me.) It's just hard to know when you can't see, touch, live with the plants yourself.
I'm sure not everyone will agree, but that is what I've learned so far and believe to be true. I'm sure I'm wrong about some of it. However, I sure wish I had started with all of this info. It would have saved me a lot of headaches at this point.
Good luck.