Driver training

[DoctorBonzo]

I'm told that driver training is the best upgrade you can make to your car, so...
can anyone recommend the best option - track day training (Oulton park is my local £££), Car Limits or similar? Whats the difference?
I'd like to learn to be ahead of the car and keep it balanced, and perhaps do the odd track day or hill climb.
Any recommendations or previous experience appreciated.