I don't know about where you are but in my state here in the US we're allowed to start driving when we turn 15... no permit or license or anything. simply carry a proof of your age and as long as there is a licensed adult in the front with you, you're free to drive wherever
my father used to race motorcycles as well as teach racing courses and safety courses so he was quite a good instructor for me during that time.
I eventually took a "real" driving course because insurance is much much lower if you've passed an official driving course.
the more experience you have the better you'll get.
also making sure it's a GOOD experience is important you want to learn from someone who REALLY knows what they're doing, not someone who is going to teach you their own bad habits.
Good to know you're learning on a stick-shift too, in the states that's a rare skill... cars with manual transmissions typically have to be special ordered because most people are f-ing lazy

it also means it's near impossible to find used cars with stick shifts.