Having a car insured for your use as a learner will allow you to practice the subjects and routines learnt in your driving lessons, this will enable you to progress more swiftly by avoiding repetitive sessions. Manoeuvres in particular are exercises that tend to require plenty of practice to perfect.
Remember you must be accompanied by a full licence holder over the age of 21 with at least three years driving experience, and display L plates at the front and rear of the vehicle.