I'm a newbie and I've got two basic questions regarding pending order as follows:

1. Is pending order type better than immediate execution order kind?
2. If I using 1 order, is it possible to close the place at different degrees of price? (e.g. Is it possible to shut half my position on a lower TP than let half my position's profit run)

I've been using two market orders to perform the case I put on question number two.

Thanks ahead of time.