From the right edge of the screen, swipe left to display the charms menu.
If using a mouse, move the pointer to the upper or lower-right corner of the Start screen then move up/down.
Alternatively, press the Windows+C keys ( +C) located on the physical keyboard (if available).
Tap or click Settings.
Tap or click Change PC settings (located in the lower-right).
From the left-pane, tap or click Accounts.
If not available, tap or click the left arrow icon (located in the upper-left) as necessary until "PC settings" appears in the upper-left.
From the left-pane, tap or click Other accounts.
From the "Manage other accounts" section, tap or click Add an account.
From the "How will this person sign in?" screen, do one of the following:
Enter the email address and password for the Microsoft account then click Next (located in the lower-right).
Tap or click Create a new account then follow the on-screen instructions to complete the account setup.