~ Why are there two views of the same file? - By creating a second window for the painting (Window > Arrange > New Window for "filename") you no longer need to zoom in & out of your piece to view the overall progress.
As you paint on the original, the copy updates too. A very cool feature.
~ Match Zoom & Location - If you tend to work with a similar layout to me, using the Window > Arrange > Match Zoom & Location could be a lifesaver.
This feature does exactly what is says on the tin. With your work document active, choose the option from the menu and your reference image (provided the dimensions of the document are similar/the same) will zoom in to the same area as you are currently painting and at the same magnification. Genius.
::attacks you for not making traditional work:: Are you having trouble with the facial hair? You know, it would be much easier to recreate with a :gasp: pencil Tee hee hee, I'm just joshin'
Glad you like it. My technique will change from next week as I will be getting a second monitor. Working with two screens will take some getting used to I think, but I'm excited about it!
(I 'm trying to learn how to deal with big pictures)