Welcome to RIU, and the wonderful world of cultivating the world's most misunderstood and feared medicines!!!
The only 'advice' I can give you or anyone is to read and learn and then apply what you have read and learned to your garden and you cannot fail. Anyways, remember the search tool is your friend...Lots of folks here willing to help a new farmer get up and growing. But at the end of the day your grow will be only as good as the knowledge and work you put into it.
It is always great to ask questions but do not take anyone's advice or opinions and follow blindly. And remember anyone may have a well-known member status…but that means they have posted and responded to many threads and does not always mean well-educated growerz. Do your own research, you will be much happier knowing you have done it for yourself and by yourself. The first buzz you get from your own budz...is by far the BEST high you will ever have!
Do a search using your current question as the keyword(s) and ZOOOM!! Like Wonka's Great Glass Elevator…off you go to tons of threads answering all your questions. Read all the Newbie Central stickies and learn…
Soaking up all that information and sifting through it, is going to take time. You will likely finish your first grow by then. Viola! grow complete and education well under way.
You have the beginnings of a nitrogen toxicity...clawing of the leaves...
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and a very dark coloring. Take a look here to start:
http://www.growweedeasy.com/nitrogen-toxicity-cannabis
The issue is not yet major but you will want to treat it ASAP especially as you get further into flowering when the plant needs less and less nitrogen. If you are using the FF trios in the amounts shown on their recipe...you may want to cut that down to 1/2 (or even 1/4) strength...especially the Tiger Bloom. But as I always say...do some research and make the choices.