congradulations, I know the feeling of getting your first snake, I always watched him and worried about what I was doing wrong, I fed my snake a pinkie every three days, because I was nervous he might starve and then I realized every 4-5 days was fine, now 4 years later it's routine and corn snakes are pretty hardy snakes, that's not to say they can't develop health problems, but I was always so nervous about feeding and holding mine at first and he is big and healthy as can be now.
Take lots of pictures, I didn't have a camera when I got my first snake, so I only have pictures of him when he's a little older, and I wish I had photos to remember just how small he was, because he has changed so much, he's a ghost by the way (hypo-anery).
I now have 5 corn snakes and other snakes as well, but my first one was very special to me because I always wanted a snake, and my mom surprised me when she picked me up at the video store I was working at with a very light movie case, she said "be careful" and when I opened it there was my corn snake, I felt like I was dreaming he was so beautiful and I just wanted to hold him right away, but I just let him settle in and fed him 2 days later, he's the biggest friendliest snake I have and it's great you will have that experience as well.