Computer science is the study of computation and computer design. A degree in computer science involves learning programming languages, algorithms, and how to develop computer programs. The course pathway introduces principles in the first year and builds on topics like data structures and algorithms. Students choose a major like computer science or computer science with data science in the third year. Branches of computer science are theoretical, involving topics like algorithms, and applied, involving areas like artificial intelligence. The document expresses interest in computer science due to enjoying math, solving problems, and wanting to contribute to new technologies like artificial intelligence.