My parents started taking me camping with them when I was 10 weeks old so I grew up with a love of it and can't wait to be taking my own family. They didn't have a car when I was a baby so it was me on the back of mam's bicycle and the tent on the back of dad's. Both had panniers and, since we live in the Lake District we would head off from home and explore.
Sister and brother came along and we had to get a car but we went all over Europe camping in the summer hols and those trips taught me a thing or two!
Don't take masses of stuff! You don't need it. But things like having a bowl or bucket to cart stuff up to the washing up spot are great pieces of advice. Don't forget biodegradable washing up liquid etc. Depending on your site it may not drain into the main system but seep into the soil.
Bits and pieces! Lots of us who camp a lot have separate boxes of camping gear ready to pick up and go. But it's always useful to make a list to ensure you pack things like: can opener, corkscrew (!), sugar, salt, matches, torch, etc!
Avoid campsites with hook ups: they can be noisy at night with people watching TV and playing loud music!
Take a bat and ball 
Waterproof, slip on shoes for trogging across dewy grass and being able to get in and out of easily at the tent door. Don't allow shoes in the tent, it soon gets wet, muddy and full of bits of grass.
I like the self-inflating foam mats (like Thermarest). However, my DH gets a bad back and also gets cold more easily than me, so I've learned the hard way that not everyone takes joy in roughing it as I was brought up to. He also hates being confined in a sleeping bag so we take a lilo, sheet and duvet for hilm
... and pillows!
Waterproofs and a dry bag with a spare set of clothes in...
And don't ever fall asleep with the inner tent pressing against the outer! Once the inside of your tent is wet you won't find it fun!!!
Have a great time 