Thanks guys for the tips. As suggested by members here, i took help from a elderly driver and did a 120 kms hill trip with him in passenger seat. It was a great experience and i'm already feeling confident about my driving. Like someone mentioned above, the brakes on Grand i10 is too sharp but on a positive note , it also inspires confidence. I'm not particularly happy with Grand i10 clutch adjustment though, there is lot of play.