In the UK, you can get your provisional licence (learners permit) when you’re 17. You need to take a theory (written) test and a practical test, and most choose to go through a driving school but you -can- just be taught by your parents or other adults over 21.
Generally speaking though it’s better to go through the instructors as they’ll teach you what you need in order to pass the practical test, which is apparently one of the strictest in the world.
After you’ve passed the real learning starts, as if you drove like you have to for the test you’re in for a bad time.
Glad I deleted all of my content over there, then.