The best way to proceed is to make sure your work is ready to go before you submit it, because you don't often get second chances to resubmit: once it's been rejected by an agent or a publisher, that's it: you're done. You can't usually resubmit, I'm afraid.
In this situation your best bet would be to write a new and better book, and hope you place that one.
I note that you started a new thread with that same post, lbwilde, which is here.
In future, please don't make multiple posts of the same comment: AW is so big already that it can't cope with that.
Don't worry: you'll get to grips with the place soon enough. It's confusing at first, but you'll work it out, I'm sure.
(Also, welcome!)
