As a beginner, i'm only concentrating on getting in and out of trades with NX orders right now. However, i was wondering if anyone could explain why would anyone want to use market order as opposed to just nxing out of or into a trade? Also, should i worry about practicing limit orders right now? I'm only trading with 100 shares right now so obviously i dont have to power to influence a lot of the buyers/sellers if i do place a limit order anyway. Finally, I was wondering if someone could explain when they would use a certain order as opposed to others. I mean i know when you make a market order you are getting the price when your order reaches the specialist, but why would someone do this instead of nx, when they can see the offer and bid prices themselves on the tape and act accordingly, isn't that safer and more economical? And what's this i hear about how market order can improve the price? Anyway, any advice on this topic are welcomed.