Have you joined either the Camping and Caravan Club or the Caravan Club (or both)? Well worth doing. Both also offer a car / caravan matching service and a towing course.
Before I towed a caravan, I had towed boat and camping trailers without a problem but towing the 'van was an education - it felt so heavy on the car. And my outfit is an 87% match.
I would start with visiting 'Club' run sites first of all... I've noticed that Camping and Caravan Club wardens will usually help you put your van on your pitch and will make sure you are all OK. On other sites they tend you leave you to it.
You will need all sorts of bits and pieces besides the basic kit: chairs and table for your awning, a bucket and watering can,
Silly question, but what do you need a watering can for ???
a spirit level and chocks, electric cable, TV cable (if needed) and a torch or two is handy. I also have a nose weight gauge and check it before setting off every time now. I wondered why the car was creaking when we first towed it - had almost 100kg nose weight when limit was 75kg. Oooops. :S
Learn by your mistakes and other people will help you - usually.