Scrolling through the pictures can be done by:-

clicking on the individual thumb nail pictures

placing the mouse cursor near to either the left or right hand side of the main picture and clicking on the arrow that appears

click on a thumb nail and either using the arrow keys of the keyboard or the scroll wheel on your mouse

To print a picture:-

right click on the main picture

select 'Open image in new window'

right click on image in new window and select 'Print picture..'