...so I need some direction

I haven't really paid that much attention to the paintwork on my car but after a quick wash and polish the other day at V-dub Island I was impressed with how it came out with a minimal amount of work

The spots are dusty rain drops which came down about an hour after finishing it

Anyways what I want to know is, what stuff should I be looking to get hold of to give my car a real nice finish? I'm not looking to spend a huge amount of money but I know going cheap isn't good.
I very rarely get the time to completely clean the car once I week so if I can get away with a finish that doesn't need much more than a quick wash on a weekend I would be happy
I know it's never going to look like it's in showroom condition with the paint being 13 years old now but I'd like it to look a bit better than it does
Any advice or pointers are much appreciated
