In one sentence, describe what the following article is about:

Type www.apple.com/ke/itunes/download into the address bar, and hit ↵ Enter or ⏎ Return on your keyboard. This button is located on the left-hand side of the download page. It will download the iTunes setup file on your computer.  On Windows, you’ll be prompted to select a download location. If you’re using Mac, the setup file will be saved to your Downloads folder. Find and run the setup file on your computer to start your installation. A new window will pop up. If you’re on a Mac, you’ll download a DMG file from the download page. When you open the DMG file, double-click and run the Install iTunes option to start the installation. You will get to select a destination folder for your install on the next page. On Mac, you may have to click Continue before selecting a destination folder. You can install iTunes on any partition of your computer's drive.  Changing the install location from the default folder is optional. If you're short on time, you can skip this step. On Windows, click the Change button under the Destination Folder heading, and select where you want to install. On Mac, click the Change Install Location button in the lower-right corner of the window, and select a folder directory. This will install iTunes on your computer. You may be prompted to allow iTunes permissions or enter your computer password to proceed with the installation here.

Summary:
Open the iTunes download page in an internet browser. Click the blue Download Now button. Open the iTunes setup file on your computer. Click Next in the setup window. Select a destination folder for iTunes. Click the Install button.