NEW Garden Help needed

Guys, I have just started my new garden at my new house and have not done one in years. I tilled the ground over the last couple days, which did have some grass in it. I tilled it several times. My questions, what is best way to get tilled up grass out, should I cover it, when should I start making my rows and when can I plant some winter items? It's probably 20' x 40' not raised. I put a couple trucks of top soil with the intent to do my garden. Should I put some peat moss in there. I guess I am looking for guidance to get it started the right way?