Does the toolbar look like this when editing posts and pages?
If so, that is the LIMITED toolbar. Update your user profile to access the FULL toolbar.
Click USERS and then YOUR PROFILE in the left column.
Uncheck the “DISABLE THE VISUAL EDITOR WHEN WRITING” option.
The Full Toolbar will now be available.
Click the icon to the far right to display the EXPANDED toolbar which includes more editing options:
The toolbar will look like this:
