Just because practice doesn't start until after the holidays doesn't mean you can't start getting ready for basketball season. Use your free time to work on important skills to get better. Look at this checklist of basketball skills.
As soon as you master one, move on to the next. There are links to some videos to help you get started.
For example, this video teaches you the basics of dribbling.
Can you already dribble properly with both hands? Watch this video for some drills that will make you better.