K
Krew
Guest
This may be well known, but in case it isn't I thought I'd share this tip. 
After stacking photos I often want to change the first picture in the stack. While this can be done by using shift + ], an easier way to do it is to expand the stack, find the photo you would like to be first, and then double click in the little box that shows which picture it is in the stack. For example, if you have a 6' picture stack and want the 18th picture to be picture number 1, just double click the box that says 18 of 6'. This will move the 18th picture to be the top picture.
After stacking photos I often want to change the first picture in the stack. While this can be done by using shift + ], an easier way to do it is to expand the stack, find the photo you would like to be first, and then double click in the little box that shows which picture it is in the stack. For example, if you have a 6' picture stack and want the 18th picture to be picture number 1, just double click the box that says 18 of 6'. This will move the 18th picture to be the top picture.