Downloading Program

Hello!!! My name is Jarina Chen. I'm from Thailand!!! The thing that I want to learn is ' how to download the programs. The reason why I want to download the programs are because I want to have my own programs. This topic makes me curious and excited!!! If I have my own programs, I will use it forever in my life!!! But first thing that I need to do is I need to know how to download the programs. After that I will have my own programs!!! That's why I was curious and excited because I want to know how to use my programs!!!