How to be a better basketball player?

I'm 5'9" and 14 and I play JV. This is my first year ever playing on a basketball team and I made JV cause my school is small. The way my coach plays is we get a good amount of shots and everyone plays. I've shot about 10 ingame shots and all were 3's but all came REALLY close but missed. My coach doesn't care that I miss but that all my shots were shot at smart times and not really inaccurated. My handles are bad. After the season ends I have about 5 months of practice. I'm gonna practice everyday. Any good workouts or routines or drills to get my shooting % up and my handles better. Thanks a lot!!!!!!!!!!!!!!