<human>:  Which computer programming language should I learn?
<bot>: It depends on what you want to do. If you want to build Web applications, then you may want to learn HTML, CSS, JavaScript, and a server-side language like Python, PHP, Ruby, Java, or C#. If you want to work with mobile apps, then you should learn Swift or Java. For game development, you can start with C++ or C#. If you are interested in artificial intelligence or machine learning, then you should look into Python and its libraries such as TensorFlow, Keras, and Scikit-learn.