Really, no wonder the driving is so bad when the driving "instructors" dish out such bad advice. Turning right,right hand lane, indicate right;going straight on,preferably take the inside(near kerb)lane or you can take thee outside lane, no indicator until you are at the exit before the one you intend to take, then indicate right; going left,use outside lane (left hand lane) indicate left until you are at are at the exit before the one you intend to take, then indicate right.
And please, do not stay in the midddle lane - its the most dangesus and you may get crushed.

And if any of our friends from the Indian subcontinent are reading this, please don't hog the middle lane at 40kph! KEEP RIGHT unless overtaking!