Sanone
First of all, welcome and congratulations. I too got my first lottie recently (just before xmas to be exact) and I too want to be organic. I've found several very useful website relating to organic gardening, which I've listed below. I also have a couple of good books by a lady called Pippa Greenwood, one is about organic gardening and the other is aimed at first time gardeners.
What I've done with my plot is split it into three to make it more managable. As I don't know the habits of the person before me I've set up a three year rotation on my plot. This way each third won't be cultivated for two years, allowing time for any residual chemicals to wash away.
Digging wise I set my self a target of 1.5 hours digging a day, no more, no less. This way I'm not overdoing it but I'm also making progress with clearing the first 1/3, ready for cultivation.
Good luck for the future.
www.organicgarden.org.ukwww.hdra.org.uk