Testing an application is not an easy task to do. As well, sometimes it can be a very tedious task to do. However, it should always be done or else you risk shipping applications which are prone to bugs which will in turn look badly on the individual / team developing the application especially since some issues are easy to find with the proper testing.
For my first co-op job I worked as a tester for an application. Yes, this meant that I was no where near the code of the application, but it also meant that I needed to know the actual requirements for the application which we were testing. I made a small poster describing some of my findings while working there.
To take a look please click here.