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One word: WalmartSC4EVA said:
Okay, a LOT of the things you need camping are your regular stuff. If you're going to a campground, especially, you'll probably have a camp office that's got stuff too if you're missing things.
Actually what you need is good containers to carry stuff in more than specialty camping stuff (especially since you won't be backpacking it). There are big plastic containers like giant tupperware, definitely very useful.
What you definitely need to buy: tent, tarp, stove, sleeping accomodations (air bed/mattress, cot or sleeping bag. If you're going airbed or sleeping bag you want to think about an extra sleeping bag -- or an old down comforter or inexpensive feather bed, believe it or not -- the cold gets into you), unbreakable eating/drinking stuff, sturdy tables for work surfaces (don't assume there will be a picnic table), lights, cooler(s), chair. Most of everything else you need is stuff you already own: Cooking stuff and utensils, food storage, first aid kit (if you don't have a first aid kit make one up, that's a gimme in any house), clothing, rain gear (at least an umbrella), bathing stuff, LOTS of towels (you never have enough). And whatever entertainment stuff you need. If you're going to have an electric hookup (VERY handy) bring a microwave if you have a portable one, seriously. If you have bucketing rain, unless you have a separate canopy for your kitchen area you can't use your stove, but you can use a nuker in the tent.
Like any other hobby, I tell people to try to avoid making a big investment until you're sure this is what you want to get into.
I'm sure there's a ton of shit I'm forgetting, but it's a learning curve sort of thing. We all have different ways of doing it.
But you definitely need large waterproof containers, and one extra to put the tent in in case of rain it's pouring rain the day you take the tent down.
