I think you've answered your own question, developing good, safe habits. You won't go far wrong there. I'm a new PPL (last July) and while I may act the goat occasionally on here I take flying very seriously, not that I don't have fun, I do but there has to be an underlying professionalism, even if you're not a professional if you get my drift.
I started off by making sure I had a few long XC and landings at some airfields that are dissimilar to your own before I took any passengers. I don't land at GA airfields on a weekend unless I have to (I fly from a very busy ATC airfield where any pratting about in the cct will get you a short interview with SATCO, no tea and biscuits) because I've found some of the circuit discipline appalling and quite frankly a bit scary.
I don't work Wednesday so that's when I do most of my 'landing out at GA' flying, when it's quiet and the weekend warriors are at work, and you know all ATC services are likely to be up and running.
Don't be afraid to admit mistakes, I make plenty, speak to your CFI or more experienced club members and get their advice. If they come the old 'well if you had ten squillion hours like me' line then don't waste breath on them.
Above all, enjoy it, play ultra safe at all times especially when carrying passengers and never be afraid to turn back.
Edit: In addition to the above about flying into Oxford, Cambridge is also a good place to visit (if you can stand the £25 landing fee and shiny vest scenario) as there is a park and ride just outside the airport that takes you into the city center for around £2.50.
Last edited by thing; 21st January 2012 at 21:49.