ACE driving school is the most famous in the country since it has the most branches distributed all over the country. But only people who could afford and have no other means of learning how to drive avail them.
Most drivers learn how to drive from a close relative. Like me, my father taught me how to drive. As a matter of fact, I learned by watching him, then taking out his car for a spin without him knowing. But that's how most learn how to drive here. It's not formal training but it works. I think for a driving school, they ask 7k for the whole course.