It's my first time how much is the pay and how do I get the money do they give u a check or cash

Yep depends on your weight, either $40/$50. Correction to what kirk said, they give you a prepaid card right there. It's loaded after every donation as soon as you're finished. It's the same as a debit card

Your first payment will be either $50 or $40, depending on your weight. It takes at least an hour to sign up and you will receive a CSL paycard in the mail. Every time you donate, the money goes directly onto your card.