How to install software in the Win8.1 app store?

Where is the Win8.1 app store?
Enter the Win8.1 start screen. In the upper right corner, the content in the app store is displayed. Click to enter and enter the Win8.1 app store, as shown below. :

After entering the Win8.1 app store, we can find the software you like to install. If you don't find your favorite app on the homepage, you can also find it in the search box in the upper right corner. I want to search for "cool dog music", as shown below:

But unfortunately, the Win8.1 app store application is not very rich, the author searched for cool dog music did not find, only cool My music, etc., as shown below:

Okay, then I will show you directly here, how to install my cool music, as shown above, click to enter "cool my music", download the installation interface, enter After that, you can click to install, as shown below:

After clicking the installation, you also need to enter the computer's power-on password. From this point, the Win8.1 app store does a good job in security. As shown below: < Br>
Click on the next step, and finally follow the prompts to complete the application installation.
However, the trouble is that the Win8.1 application store needs to use the Microsoft account. If you don't have a Microsoft account, you need to register a few. In short, it is not very convenient. Of course, it is convenient to register once, and there is Microsoft. The account can also back up the application or some computer data.