Well done grahowler,
Now you've got no excuse! The best advice at this stage is to get out there and go for it

At the moment the best place to learn is lakes, if you've got one nearby then you're set. Rivers usually have a bit of current running along them so be very aware of getting swept along with the current, although when learning I did have some very memorable sessions on the mighty Tweed. You can probably uphaul now, right?
Things to learn:
Lightwind tack
Lightwind gybe (Both these involve holding the uphaul rope, leaning the mast to one side, and letting the wind blow you slowly around).
Steering by moving the sail forwards and backwards.
If you've had some lessons you're probably already pretty confident with these skills.
Once these become a bit boring, buy yourself a harness and harness lines. These allow you to take some of the strain off your arms, and let you go out in higher winds. Once you start getting hooked in, you will suddenly discover two things:
1) Harnesses let you go really really fast.
2) Harnesses let you crash really really hard.
Ahhh the memories. Enjoy the learning process mate, and don't hesitate to let us know how you're getting on. Advice (good and bad) is always forthcoming here