Username & Password
1. Click the Apple menu in the upper left-hand corner of your screen. From this menu, select System Preferences.
2. In System Preferences, select Users & Groups. Here you'll see a list of users, and whether they are an admin, standard, or managed user. Click the lock icon in the bottom left corner of the Users & Groups page.
3. The dialogue box that appears lists your username in the top field. Whatever password successfully unlocks the lock is your user password. If you are an admin user, this is an admin password.