Basketball--improving ball handling

[Popinjay]

My right hand is average-below average(my dominant hand) but my left is very very crappy. I would like to improve both of them but especially my left. I can't break people down on offense and I don't feel that comfortable bringing it up the court as a point guard. I'm 5' 8 so I am pretty useless without these skills. I would like to become unuseless, help me oot. I'll be playing probably everyday and will have a lot of time to do stuff.