 Hello, I'm here to help you download and install QTIS. Please click on the link provided. This will take us to the QTIS website. Click on the download now button to open up the download page. We need to install a long term release version as it is the most stable, so we scroll down to the appropriate length. These links are for Windows operating system. If we scroll down further, there is a link for Mac operating system. And this is the link for the most stable version for Mac operating system. My computer uses Windows operating system, so I will scroll back up to the Windows operating system link. You also need to determine if your Windows operating system is a 64 or 32 bit, mine is a 64 bit, so I'm going to click on the 64 bit version link. It is now downloading. This may take a while depending on the speed of your internet. Once it is done downloading, you can open it from the download tab and follow the setup wizard prompts. Click next. You can read the license agreement and click I agree. Please leave the destination folder as it is and click next. Click install. After the installation process is complete, you can click finish. You can now click on your Windows start button to locate your QTIS 3.16 desktop icon. Click on the icon to start the application.