Paycheck question when do I get paid?

I got my first real job and I get paid hourly. The pay period is every 2 weeks, so the end of this week I get paid. This is a small business with about 20 employees working a day and they have alot of orders so I know they make alot of money. Anyways what I want to know is if you think I will get paid Friday at work or if they will send it in the mail, if they do send it by mail how long would it take? I really would like to know because I bought a guitar on layaway and really want it asap. Thanks.