Driving exam today. Tempted to buy a car!

[rayjay]

IMO, there is NOTHING cheap about owning a car.
Before purchasing a used car, take it to a mechanic that you can trust (that isn't selling the car) and spend a few bucks to find out what it may need in the coming year.
Do a lot of research before leasing as car leasing isn't wise for everybody.

tired of relying on others for grocery shopping and fish stuffs

You may find that car ownership is more expensive than paying for cab fare even.
Cost of car, gas, repairs, insurance.
To become a good driver will take a lot more than 6 months experience normally.
Confidence can be a misleading indicator as you can feel confident without being a good driver.