Snakes are as diverse as most other reptiles.The majority of petsnakes are nocturnal so they don't need the elaborate set-ups that you need for lizards.But you still need a source of warmth and a place to hide and the proper substrate.Stay away from wood shavings of any sort.Most are toxic and  full with dust that can  irritate the sensitive lining in the lungs.A suitable enclosure is as easy or as elaborate as you want but it should be escape proof.Snakes have all the time while you are not watching to find the weakest spot and wiggle out.Depending on where your snake originated from you will need a more humid enviroment or more dry.If a snake has problems with shedding then the humidity is propably too low.Most petsnakes eat rodents and I suggest to buy frozen as you can buy them in bulk and they don't bite back,hence you will not put your snake into danger from a feisty rodent.Some baby snakes are picky and must be head started with lizards or toads and then switched to scented rodent.Some will never do the switch and such snakes are for the experienced keepers only-in my opinion.Some snakes even eat fish or insects.You have to know where your snake came from and what it needs to live a healthy life.Do your homework and ask experienced keepers or read up online and in books.