Can I see my site from the perspective of one of my staff?

You can switch in as another user. To Switch in as another user:

Admin -> Users

Find the User you want to Switch In as -> Under Role Level click Switch in as user

When you are viewing the site as another user you will see the orange stripe at the top of the screen telling you who you are viewing the site as. 

To return to viewing the site as yourself: Orange stripe at the top of the screen -> Return to your own profile