If our computer is used by multiple people, it would be better if each uses their own account. So how to add users to Win10, including Microsoft account, local account and child account?

Tutorial on adding Microsoft account in Win10

Enter "Computer Settings", select "Users and Accounts", continue to select "Other Users" to open the "Manage Other Users" interface. As shown in the picture:

Click "Add User" under "Manage Other Users" to go to the "How to log in for this user" interface. As shown in the picture:

Enter the email address of the new account, which needs to be a Microsoft Outlook email or hotmail email. If not, click "Register a new email address" to go to the create Microsoft account interface. As shown in the picture:

Fill in your name, set your email address and password, and then click "Next" to go to the "Add Security Information" interface. As shown in the picture: