Like mentioned above try finding the language that is used in beginner classes and learn that, most likely it will be Java. Try to find projects that you like/interested in. Also, put all the projects you complete on GitHub, it will serve as a motivation to post/finish a project, it will also get you used to the GitHub which you will be using in your career. Depends on your aptitude with math, but I would say get a head start on that since that is what a lot of people fall behind on. Good luck