Linux is a type of computer operating system, which means it is a set of instructions that tells a computer how to turn a computer on, and how to do tasks like save files and open programs. Linux is loved because it is free and open source software, which means that anyone can use the code to change it however they want and make it better. Also, it runs very quickly and is extremely secure and safe, which means no one can get into your computer or break it. Finally, Linux is very user friendly and developers have made many different versions, making it great for beginner and advanced users alike.