That's good advice.

One thing you should check if you are having trouble seeing images because they are showing up too dark is to calibrate your monitor.   The easiest way is to use Adobe Gamma if you have Photoshop.  You can access that through your "Control Panel" by clicking "Adobe Gamma".  Otherwise you can do it manually by using this link:   http://epaperpress.com/monitorcal/

It made all the difference when I did it.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi