Simon,
I am about a year down the road from you, and haven't crashed one for almost a week. My trainer (self-taught, and the results were as can be expected), was a GWS stock Cub. Very docile, and durable. Now to my suggestion; find yourself a good open spot, let that puppy get up to an altitude that will be forgiving (say 100/200') and use very small, gentle control inputs. Almost all of my troubles come from over-contolling. Throttle back and enjoy. And learn on days when the wind is no more than 5 mph or so. And, keep lots of epoxy and strapping tape handy. My battered ol' Cub still flies, but my ego (lack of common sense) has got me flying/crashing three axis airplanes nowl.
Good luck, and enjoy.