Something I use all the time to handle applications which might have multiple instances opened at once. For example, web browsers.
Press CMD-TAB to bring up the list of opened applications and then pressing UP or DOWN over a selected application to show the opened instances. After that use LEFT or RIGHT to select the instance you want to show.
Press CMD-TAB to bring up the list of opened applications and then pressing UP or DOWN over a selected application to show the opened instances. After that use LEFT or RIGHT to select the instance you want to show.