The biggest thing to remember is we all make mistakes when growing. The best advice I can give you, is to research everything you read on here. No matter who it is from it is their opinion. Just take what works for you and dump the rest. Good luck and welcome to RIU.
Advice? Well, if you have certain questions, then you can use the 'search' feature on forums. That will direct you to the pieces of information you want to find.
And I would suggest GROWING. That's the best way to learn. I think someone else already said this, but the more mistakes you make in the beginning, the more you will learn as an MMJ grower. Really. Some lessons can only be learned hands-on.
Try reading some books - those things with paper in them. LOL. Marijuana Horticulture has saved my ass more times than I can count.
AN has Advancepedia, which is also going to help you with AN nutrients questions. I use AN and I've also learned growing techniques from that info.