Couple things I'd suggest.
Run out and buy
Corn Snakes: The Comprehensive Owner's Guide Best book you will ever read on the subject. It's basically your bible for keeping corn snakes. Pretty much tells you anything you could ever need to know.
Few basic pointers (and these are just my opinions as someone who is also still pretty new to this)
-Aspen bedding is awesome as a substrate.
-Make sure you have plenty of hides (the more the merrier)
-Make sure the tank has a warm side and a cooler side, so the animal can regulate it's own temperature
-Buy a device that controls the heat your heating source puts out to avoid heat spikes (I forget the name, but I am sure someone here will know what I am talking about)
-Keep a feeding schedule (I prefer frozen mice as do I think most people here)
-Never handle your snake for like 48 hours after eating (or they might puke on you)
-Keep the cage lid secure (you will be amazed how industrius these little guys are in breaking out birdman of alcatraz style.) or be prepared to go on a snake hunt. Nothing positive comes from escaped snakes. Hopefully your enclosure comes with a locking lid. If not, I'd seriously suggest going out and getting one.
-change the water daily.
-handling your snake causes the snake stress, so be careful, especially at first.
finally, and most importantly
Enjoy your new friend!
