corn snakes are really, really easy. a great starter snake. they can handle a lot of different care regimes, so a lot depends on your goals (naturalistic cage, easiest/least time to clean, docile pet, breed, etc).
the basics are to let it get to about 80 during the days with cooler nights. it's fine to be warmer in the summer and cooler in the winter, fresh water, dead domestic mice (much easier to overfeed than underfeed). give it somewhere to hide. ideally have a mostly dry cage with a more humid refugium.
don't use a hotrock, they suck. don't use cedar, pine is ok, aspen or "softwood" is better.
do you already have one or are you looking to acquire?