You might already have a car in which to practice. This will certainly help, even if it's quite different from mine.
If you're deciding what to buy, think about (1) initial cost, (2) running cost, and (3) fuel. If you'll drive under 20,000 miles/year, a petrol-fuelled car is probably best, though it's not as powerful at low speed (= easier to stall). Then there's EVs. For broader info, see guides on owning a car.
I trust these user-car dealers to help you decide what suits you: Onions (West Heath); Smallbone & Son (Selly Oak); The Wigorn Garage (Selly Park); Glenavon Motors (Maypole); Park Garage Autos (Selly Park/Oak); Addison Road Garage (Kings Heath).