The programming language you should learn depends on the types of projects you want to build. Here are a few popular languages and the types of projects they are commonly used for:
Python: Python is a versatile language that can be used for a wide variety of projects, including web development, data science, machine learning, and scientific computing. It has a large and active community, and there are many libraries and frameworks available for specific tasks.
JavaScript: JavaScript is mainly used for web development, and is commonly used to create interactive and dynamic user interfaces. It's often used in combination with HTML and CSS to create web pages. It can also be used to build frontend and backend of web application with libraries such as React, Angular and Node.js
Java: Java is a popular language for building large-scale enterprise applications, Android mobile apps, and games. It is known for its stability, scalability, and security.
C#: C# is a Microsoft's language and it is mainly used to build Windows desktop applications, games, and mobile apps using the Unity game engine.
C++: C++ is mainly used for developing system software, gaming engines, and high-performance applications. It's used to build operating systems, drivers, and embedded systems.
Swift: Swift is mainly used for iOS app development. It is considered to be more efficient and easier to read than Objective-C, which was the previous language for iOS development.
Ultimately, the best language for you to learn will depend on your goals and interests. If you're not sure which language to start with, Python is a great choice as it is beginner-friendly and can be used to build a wide variety of projects.