I desperately want to improve my dribbling/ball-handling...?

I'm 14 5'11" and 155 pounds. I plan to try out for freshman basketball next year. However, my ball-handling skills are average. I am an extremely good shooter and a pretty good passer, but my dribbling is so-so and perhaps below-average. I REALLY need to improve it I'm willing to work for hours everyday. What drills should I do? Any examples? Which fundamental moves should I perfect? Can you tell me which dribbling moves I should learn to do by instinct? Thank you