Ideally first you should learn C/C++ as well as Master in Python. Followed by learning about Data Structres and Algorithms (C++) as well as exploring Data Science and Machine Learning (Python). Apart from this practice Coding regularly, take up Projects and Internships. I believe this would be enough. Secondly always pay attention to your College Coursework and try exploring your area of interest to depth, be it Web Development (HTML, JavaScript, CSS), Software Development or Data Science related vertical.