1)You should dress to impress for your first date, but don't wear anything too formal. A crisp collared shirt with a pair of nice jeans and clean sneakers should be sufficient for most situations. You not only want to dress well to impress your date, but you always want to impress yourself. If you feel confident in your appearance, you will exude this confidence on your date.
2)Pick up the tab on your first date, but make sure that you don't spend too much money. If you spend a lot on your first date, your new girl will either think that you are showing off, or she will expect expensive dates every time. Instead of spending a lot of money, focus on enjoying the date.