Hey, just thought I would try to help a little bit.

First you cannot sex your plants at the seedling stage. That happens in about 3-4wks depending on many variable but that's about when its able to happen.

Second please take the time after you have smoked a little green to read the section on frequently asked questions and then basic growing. You will learn by others who once asked the same questions and more then you are.

It is faster to do this for many reasons. And it is not smart to roll with your plants in the same tub or container, many people do and after weighing in any possible positive I can still only see the tons of reason why you shouldn't. Those topics are covered in the Frequently asked section, and its nice because you get to read many different experienced growers responses and they have pictures uploaded on the very topic your intrigued by. After all that and you get your garden going I would log it on here and you will be surprised by all the helpful people on here just waiting for you to succeed.
Basic Growing - Cannabis Forums Message Boards - Medical Marijuana, Cannabis Club, Dispensary, News
Grow FAQs - Cannabis Forums Message Boards - Medical Marijuana, Cannabis Club, Dispensary, News