I'd be cautious about Craigslist if I were you: yes, you can find people who just want a pet off their hands, but since you are NEW to snakes and presumably
won't know a sick snake from a healthy one, this "free to good home" or even a high-priced snake can turn into a disaster for you. There are both ignorant
& unscrupulous animal owners around who are more than willing to take advantage of your inexperience...it's better to deal with a reliable breeder or source.

As far as corn snakes (or any kind of snakes) they have their own personality just like us. Some are shyer, some are more feisty...MOST corn snakes make
excellent pets, but it's also up to you. Remember that snakes rely on their instincts to survive, & that the only thing that picks them up in the wild is a predator
that's about to EAT them....we are big scary giants until they learn (& they DO learn!) not to fear us. If you are patient & observant, you may NEVER get bit.
I really can't recall any bites ever from the 5 corn snakes I currently have, nor any memorable bites from all the corns I raised in the past years keeping them.

But if you are pushy & impatient, you'll deserve any reminders you get, OK? Nearly all corn snakes are gentle souls that make wonderful pets, are quite
attractive, are readily available (captive-bred & healthy), & are one of the easiest species to care for. They EASILY accept frozen thawed rodents too, you won't
have all the feeding challenges with a corn snake that you would with a ball python. BPs have often been suggested for beginner's because they are mostly
docile & pretty, but it's much more challenging to get their enclosures on point for them to stay healthy, & feeding quirks are common...you have only to read
threads here to know that.